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Sam lazily looked out of the window on his side of the pick-up as his mother drove him into town. He was trying to put a brave face on for meeting Cara for the first time. He had accepted that she and his mother had slept together and had enjoyed each others company but something just didn't sit right with him about the whole situation. The way his mother sounded while she spoke to her on the phone before they left, he could tell that she was just as excited as Cara was.

He looked across at his mother and let a grin pass across his face; he couldn't get over how odd she looked today. She was wearing a light cotton dress with a red and white checked pattern with a black ribbon tied around her waist and some open strapped high heels. That was fine but her dark leather biker style jacket with tassels down the arms just made her seem completely out of place.

They had spoken already about Cara that morning and Sara had insisted that he look presentable for meeting her. He had put on a good pair of jeans and a dark coloured shirt and generally tidied himself up a bit. He was certainly pleased that his mother liked what he had done with himself, so much in fact that she had stopped him before they left and sucked him off on the veranda.

Sara looked across at her son and smiled to herself. She knew Sam would get over any grievance he had with Cara very quickly after he has spent some time with her. She had even encouraged him to try and get a little physical with her if she was being forward with him.

* * *

Cara opened her apartment door and greeted Sara with an affectionate hug and a quick hello before ushering her friend and Sam in to her apartment. Sara was more than pleased to see her again and even sounded more excited than usual.

"Cara this is my son and mate, Sam." Sara announced happily as she stood behind her son and wrapped her arms around him and kissed his cheek.

Sam looked up at Cara slowly, not really paying attention and smiled. "How d'you do?"

Cara smiled gracefully and nodded at him. "I do very well handsome."

Sam looked away shyly, feeling a little lost because he was about to be left alone with someone who he had never met before. Sara hugged him tight them slowly let him go and backed away. "Well I'll let you two get acquainted while I'm away."

"Any idea how long you'll be?" Cara asked.

Sara shrugged and shook her head. "They're going to do some tests and give me a consultation. They said I'll have the results in a couple of hours for the basic tests and they'll call me with the other results in a few days time."

Sam held his mother's paw gently and smiled. "Take care Mom."

Sara smiled and kissed his cheek. "I'll be fine sweetie. You just relax and have some fun here ok." Sam nodded then reluctantly pulled away and sat in a recliner.

"I'll see you out." Cara said and slowly guided Sara downstairs as they exchanged a quite conversation as they left Sam alone.

After a few minutes Sam heard the front door close and his senses suddenly became sharper. It was like he had been sleeping for the whole journey from the cabin and he had suddenly woken up in unfamiliar territory.

He started looking around the room as he listened to the sound of Cara's heels clicking as she made her way back upstairs. He got up from the recliner and had a closer look at some of the pictures she had around the room. He stopped at one, which was a photo of Cara in New Zealand. It looked like she had been quite the adventurous type a few years ago; the climbing harness and ropes spoke for themselves about what she had been doing there.

Sam's ears twitched as he realised he couldn't hear Cara footsteps any more and he slowly looked over his shoulder to see her leaning against the door smiling at him. "Hard to believe it's me in that photo isn't it?"

Sam looked her over and compared her to the photo he had just been looking at. His mother was right; she really was beautiful. He smiled sheepishly and answered quietly. "Not really, you don't look like you've changed much." Sam continued to watch her as she came closer then sat on the couch next to him.

He was enjoying the view as she moved, her large breasts bounced with every step she made; even as she sat they moved gently until she was settled. She patted the seat next to her and smiled at Sam. "I think we need to talk Sam." She announced in a level but friendly voice.

Sam nodded and moved to sit by her, his eyes traced her entire body and he found himself liking the knee high boots, short skirt and crop top she was wearing. As he sat down he returned his gaze to hers. "So..." He started but couldn't find anything else to say.

Cara looked down as she took over talking. "Sam, I'm sure you know about what happened here a few nights ago. Your Mom told me about what happened when she told you."

Sam sat quietly only letting out a soft sigh.

"To be honest, after I heard about your reaction I doubted if you'd ever want to meet me at all." She paused, giving Sam a chance to speak if he wanted. He remained quiet.

"Sam, your mother and I shared a very personal moment with each other and I think I can look on at your mother as more than a friend, maybe a companion; but I know she won't ever leave you. She made that very clear that night, but I know that she wants more."

Sam's ears perked up. "More?"

Cara nodded. "You have no idea how truly your mother is in love with you. She can't wait until you're fully grown, but she's also enjoying every moment as you are now. But while we were talking that night she told me about some of her fantasies."

Sam became very curious all of a sudden but allowed her to continue.

"She told me about some friend of hers she used to fool around with and that she wouldn't mind having an all girl orgy. She also wants to watch you with another female, maybe even a few females."

Sam dipped his head. "I had no idea Mom still felt that way."

Cara was a little taken back by Sam's statement. "You knew she was into females before this?"

Sam nodded. "When my Dad died, Mom and her best friend Tanya started spending a lot more time together. I was certain that I'd heard them kiss a few times."

"Didn't that surprise you?" She asked.

Sam shook his head. "I had over heard some conversations before and I knew Tanya liked males and females so I wasn't that shocked. Anyway Tanya made my Mom happy, I just don't think she wanted to let go of my Dad so soon for another partner."

Cara Smiled softly and gently rubbed his knee. "You have no idea how mature you are for your age to be able to think like that."

Sam turned and looked out the window. "Maybe, but the first thing I wanted to do when I heard you had slept with my Mom was beat you until you were sorry, but I don't like the idea of a guy beating on a girl, it's just wrong."

Cara felt a chill run down her spine as she moved back a little from him with an uncomfortable squirm. "And now?" She asked quietly.

Sam sighed and rested right back into the seat. "I don't know, part of me wants to be your friend, but the other won't let go of what happened."

"I understand, I know it's not easy for you being here; but if you give me a chance I'm sure we'll get along in time." She said as she tried to make eye contact with him.

Sam closed his eyes and let out a long sigh. "I hope so." He said softly then turned towards her and smiled as his eyes opened and made contact with hers.

Cara smiled and gently squeezed his paw. "Thank you." She said with great relief. After a moment she stood up slowly and walked past him. "Would you like something to drink Sam?" She called back as she entered the kitchen.

"Please. What do you have?" He said as he got up and followed to see what she had to offer.

Cara stood bending over, looking into cabinets. "Well I've got lots of different juices or tea and coffee if you want something hot."

Sam stood in the door way and watched her. He liked what he saw; Cara really could hold a sexy pose without realising it, he thought. "Tea please." He watched as Cara busied herself around the kitchen as a thought suddenly came to him. He moved behind her quietly as she kept herself busy. "Can I ask you something?"

"Sure, what is it?" Cara replied without turning around.

She got a sudden shock as she felt Sam press up against her and gently pin her against the kitchen work top. "How was it? Sleeping with my Mom?" He muttered softly in her ear.

Cara took a moment to realise what he had just asked and stammered as she felt his paws grip her waist. "Sh... She's... incredible. I... I don't think I've been so connected with another female."

"That's good." He whispered softly. "You know she wants us to be much closer than just friends. All of us." He growled softly.

Cara relaxed and pushed herself back against him gently. "Yeah, I know... but I wasn't expecting you to come on to me like this." She whispered back.

"I know, but I just had a thought. There's a bit of bad blood between us just now, how about we take it out on each other a way we can both enjoy." He growled seductively as his paws slowly moved under her top and gripped her breasts firmly.

Cara let out a soft moan and rubbed back against him more firmly. "You wanna play rough with me Sammy?" She murred. Sam bucked against her backside making her bump against the kitchen worktop again. "I'll take that as a yes then."

"Mom did say you didn't mind playing a little rough." he panted as he firmly massaged her breasts and tugged at her nipples through her bra and let his gradually stiffening member press between her buttocks.

Cara smirked and reached behind her head to stroke Sam's face. "Damn horny teenager." She growled softly "You're going to get me into so much trouble."

"We're all in trouble already, but we're just not going to get caught." He whispered as he firmly pinched her nipples making her gasp loudly. Cara spun around letting her long brown hair fly behind her. She suddenly pushed Sam back against the wall then quickly pressed herself against him and kissed him roughly but passionately. "Rough

enough for you Hun?" She murred. Sam grinned wildly and pulled her skirt up as he grabbed her backside.

Cara teasingly unbuttoned Sam's shirt and then began firmly scratching at his chest. "My, you are in good shape." she purred." Let's keep you that way."

Sam chuckled. "That's pretty much what Mom said."

"Smart girl." Cara said with a mischievous grin as she raised her thigh to his hip and held him close. They both launched themselves back into their furious bout of kissing and fondling each other for a good long while; forcing each other against furniture and walls with reckless abandon as their lustful actions carried them throughout the

house.

Sam suddenly spanked Cara hard on her backside making her squeak in pain. "Ouch! You really do want to treat me like a bad girl don't you?"

Sam stopped what he was doing. "Sorry, Mom's told me I can be a bit heavy handed when I'm doing that."

"Really?" She said with a tang of playfulness. "Let's see if we can get you to work it out of yourself then." She pulled away and took his paws in hers as she led him to the couch and pushed him back onto it. Sam looked a little stunned at what she was doing as she took her skirt off then crawled over his lap leaving her backside fully exposed. She brushed her tail teasingly under his chin for a few moments. "Well, are you going to teach this bad girl a lesson or not?" She teased.

Sam smiled wickedly at her and firmly but gently gripped the base of her tail and pulled it up to fully expose her well rounded rump. Sam ran his short claws over Cara's soft furry backside making her shiver with anticipation. In a low deep growl he called out to her "Bad girl!" *SMACK* his paw suddenly and sharply lifted and reconnected with her body; she howled in pain and pleasure as the heated soreness rippled across her backside. *SMACK* again his heavy paw connected with a loud crack and another howl from Cara. Sam couldn't believe the look on her face, somewhere between rapture and agony. "Looks like you still haven't learned your lesson." He chuckled jokingly.

Cara looked back over her shoulder and smiled playfully. "Better make it a good long lesson then." She slowly arched her back making her backside rise a little more. "Teach me." She demanded. Sam smiled back and obliged, his smacks began to rain down on her backside, every howl and moan she made drove him on and on. Cara was going wild inside, she hadn't had a spanking like this in a good long while; but she knew Sam was doing more than just pleasing her. He was relieving the tension that made him want to hate her. She could tell just how hurt he had been by the constant heavy smacking he was delivering to her backside.

For several long minutes Sam continued to spank Cara. He finally looked away from her backside and what he was doing and looked towards her face. He suddenly realised she had gone quite and was panting heavily. He could see she was no longer enjoying the spanking as much as she had been before. He lowered his paw and gently rested it in her thigh and looked back at her backside. He was shocked to see that it actually looked a little swollen and he was sure he could see her skin under her fur had gone bright red. "Are you ok?" he asked softly.

Cara took a moment to compose herself; her throat had gone dry from all the noise she had been making. "I'll be fine." She croaked. "Just a little tender at the moment." She slowly started to get up on her knees but found her legs were a little shaky.

"Do you need a hand?" Sam asked tentatively.

Cara nodded. "Could you get some water please? My throat's a little dry." Sam got up and did as he was asked and returned to her quickly. Cara sipped slowly at the water to wet her throat before she spoke again. "Think you got it all out Hun?" She asked.

Sam suddenly realised how aggressive he had just been with her and felt a little ashamed. "Yeah I think so." He paused as his ears dropped flat against his head. "I'm sorry if I hurt you Cara."

Cara smiled and softly stroked his cheek. "You did hurt me a little but if you want to go further with me it'll make it all the more fun."

"How do you mean?" Sam didn't quite understand. How could hurting her make anything further more fun?

Cara giggled to herself and moved closer to Sam. "Think about it, my ass is pretty tender at the moment. If you wanted to take me right now, I'd have the sensations of my sore butt and you stuck inside me as well as anything else you wanted to do to me."

"But won't that still hurt?" Sam felt a little lost in the conversation.

The Collie started very softly scratching down his chest. "Not for long. You see the receptors in your brain that respond to pain are the same ones that respond to pleasure, which is why you get some people who become addicted to painful sex fantasies."

Sam found that he understood but wasn't too sure about it. "Are you like that?"

Cara laughed and covered her muzzle. "No Hun, I do like an occasional hard spanking every now and then and I do like to play with some of the sex toys that cause a bit of pain every now and then just for a change, but I'm no masochist." Sam smiled and gave her a gentle hug.

They embraced for a short while and then slowly pulled back. Sam looked Cara over; their rough playing and fondling had left Cara looking a little scruffier than she was when he arrived. He liked it; it made her look looser and more comfortable. "So do you want me to have sex with you?" He asked gingerly.

There was a glint of lust in Cara's eye as he spoke. "Not until I've seen what you've got to offer and at least had a little taste too." She rested her paw over his crotch and gave a gentle squeeze making him groan softly. "Now let's see it." She growled seductively as she began to open Sam's jeans.

***

Sara sat in the Doctor's office feeling a little bored with waiting. She was beginning to wish she had taken Sam with her; at least she'd have had someone to talk to then. She realised however that this was still a personal thing and if there were bad news she wanted to make sure the knowledge had sunk in with herself first.

The door opened and in walked a petite and cheerful female mouse. "Good morning Sara." She said as she looked at the file in her paws "Sorry for keeping you waiting. I'm Doctor Rossley." She took a seat next to Sara before continuing. "Now what seems to be the problem?"

Sara relaxed a little and took a breath before she started. "Well it started a few days ago. My breasts have started to feel quite painful and are starting to look a little larger than they use to."

The Doctor made a quick note on her file. "Have you any ideas what might have brought this on?"

"I thought I might be pregnant again but I tried a pregnancy test before I arrived and it came up negative." Sara said with slight bit of disappointment in her voice.

The mouse mused for a moment. "Have you recently had a lot of sexual intercourse or been subject to stresses or noticeable hormone changes?" She asked.

"Yes, I recently found a new mate and I think it's fair to say that we have been having quite a lot of sex, but I can't think of any hormone changes or mood swings for that matter." Sara picked her words carefully so as to leave Sam out of the equation.

The Doctor seemed some what intrigued. "Really? I don't want to appear rude, but before you met your new mate and started engaging in sexual intercourse, can you give me an idea of how long it was since you last had sex?"

Sara sighed heavily. "At least six years."

The mouse seemed a little surprised. "Six years? Did you not have any time alone to work out your sexual tension?"

"No not really, My Husband had died and I was left to raise my Son. Life pretty much became him, work and whatever I was doing at the weekend. I think it would be fair to say that I pretty much forgot about sex or having a partner for quite some time."

The mouse made another note. "Have you been taking the pill all that time?"

Sara nodded. "Yes, but I don't think I've taken it in the last week."

"Well it sounds like you could have a slight hormonal imbalance in your body." She made some more notes before continuing. "There are a few tests we can run but I want to run a blood test and a breast scan just to be certain." Sara nodded as the doctor got up. "If you come with me please, some of these might take a little while."

***

Sam was writhing in pleasure as Cara clamped her mouth around his rock hard shaft and sucked at his whole length before quickly releasing him and licking at his tip furiously then repeating the process. She had been at it for a good ten minutes and had already brought him to a climax once already. Not feeling any urge for her to stop what she was doing he lay back on the couch stroking his fingers through her hair and occasionally bobbing her head faster or slower.

Cara was seriously impressed with Sam's stamina and self control. She wondered just how much sex he and Sara had been having in order for him to be so in control of his body, or if the days of sex they had been having had started to take their toll and he was just drained.

She continued her skilful blowjob for a short while before slowly releasing him form her jaws and taking one last lick of his tip. "Still hard after all that? My, you are something special." She purred. She watched Sam panting and smiling at her for a moment then giggled to herself and stood up in front of him. She watched him carefully as his eyes traced her body over and over as he decided what he wanted to do and where to start. She decided to give a helping hand in making up his mind. She turned round slowly and seductively before sliding her small black panties down her legs and stepped out of them. She straightened up again and parted her legs as she gently gripped her still tender backside and spread her butt cheeks to give him a full view of what she had to offer. "My turn Hun." She murred softly as she looked at him coyly over her shoulder and winked at him.

Sam's eye's widened as he sat up and took a good look at her exposed crotch, as he moved closer he could smell how turned on she was and even saw a slight trickle of her vaginal juices trickle down the inside of her thigh. There was no point letting it go to waste he thought as he firmly gripped her thighs and licked the slim trail of her sexual fluids back up to it source.

"Ooooo... You are really good at this Hun." Cara shivered as his tongue moved slowly over her slit. Sam grinned at the comment and continued to lap up the juices gently flowing from her hot moist sex.

Cara murred in pleasure at the soft warm strokes Sam's tongue made over her slit then suddenly gasped and steadied herself with her paws on the coffee table as his tongue slipped between her folds and deep inside her slick tunnel.

Sam began to swirl and slide his tongue around inside her for a short while and eased up the grip he held on Cara's thighs, allowing her to squirm and buck against his muzzle. Cara released a long moan as Sam withdrew his tongue and began roughly sucking at her clitoris. "Damn it Sam, don't stop!" Cara called out.

With a wicked smile Sam continued sucking at her clit, then with a long lick across her slit he pulled back a little. Cara whimpered and looked back over her shoulder at Sam with pleading eyes. Sam gave her a playful wink and moved closer to her crotch again.

Cara let out a shriek of surprise as she suddenly felt Sam's tongue gently licking and pushing at her anus. It didn't take long for Cara to be over come by the sensation. With a long howl of bliss Cara fell to her knees panting and gasping. "Now that I didn't expect. You like a nice bit of ass from time to time, huh Sammy?" Cara panted.

Sam nodded and patted her still sensitive backside making Cara yip softly. "Mom got me into it and I really enjoyed it."

Cara grinned wildly. "Maybe you can explore my tail hole a little more in depth later." She said with a playful wink. Sam smiled and gave her tail a gentle tug; Cara smiled and sat back against the bottom of the sofa between his legs. "Want to take a little break and recover Hun?" Sam nodded and softly scratched behind her ear, making her growl seductively.

* * *

Sara was not in the best of moods, she didn't enjoy being poked and prodded by doctors, no matter how serious her problem might be. She had given the same answers to the same questions several times and was getting bored with the various tests. There wasn't even an attractive male doctor to try and distract her attention.

She had just finished getting dressed after a weigh-in and breast examination and had been waiting on the doctor yet again. Sara began to get a little paranoid at being left alone after some of the examinations. She wondered if it really was something serious.

Sara sat patiently as the minutes ticked by and sighed in relief when the door opened. Dr Rossley entered the room with a comforting smile on her face. "Well Sara, I'm happy to tell you that the tests show nothing serious."

Sara sighed heavily with relief "Well that's one thing." She replied with the weight of the world seeming to have suddenly lifted from her shoulders.

"We won't know for certain what it is until we get the results back from your blood test, but I have an idea what the problem could be." The doctor commented. Sara sat back in her chair and perked her ears up. The doctor continued "What I believe you have developed is a sudden hyper-sensitivity to estrogen and progesterone. It's a condition sometimes referred to as Gigantomastia."

Sara looked a little confused. "Gigantomastia? What is it?"

The doctor rested further back in her seat as she began to explain. "What it is; is a sudden reaction to your hormones localised around your breasts. What it does is cause a sudden but progressive growth in the tissue in and around the breasts."

"I never knew that this could happen. Can it be slowed or stopped?" Sara asked.

Doctor Rossley sighed. "Unfortunately the only way to stop it is to let it stop naturally or to have breast reduction surgery."

Sara looked shocked. "How bad can it get?"

"Sometimes it can just keep going, some cases have been known for the breasts to grow in excess of fifty pounds each."

Sara suddenly felt very uncomfortable. "So my breasts could keep growing until they're the size of beach balls?"

"It is possible but cases of such extreme growth are incredibly rare. Most tend to stop around the double D to F cup sizes."

Sara took a moment to think about what had been said. At least she had some friends who were endowed with particularly large breasts that she could get some advice from. "Is there nothing I can try to help with the discomfort?"

"I know it's not very encouraging hearing this, but the only things I can recommend are going back on the pill periodically so that your body tries to level its hormone level out and I know you won't like the next one." She said calmly.

Sara shuffled uncomfortably in her seat "What is it?"

"You can try cutting down the amount of sex you've been having. I'd consider taking about a week to calm down then get into a rough pattern of regular intercourse; it could help but there's no evidence that it will work." The doctor said sympathetically.

Sara looked upset "I can tell you right now my mate will hate that idea, but I think a couple of days without sex might be a good idea." Sara hated the thought of not allowing herself to mate with her son or denying him what he wanted physically from her, but anything was worth a try at the moment. The idea of surgery to reduce her breast size made her very uncomfortable. She could live with another cup size or two and knew Sam would like it; she just didn't want it to get out of control.

"I fully sympathise unfortunately there's not much else we can do if this is the case." The doctor said softly to try and comfort Sara. "There is one more test I'd like to try and will give us all the information we need to get a better idea of what's going on with you."

Sara groaned "Alright, will it take long?" She said not expecting a helpful answer.

* * *

Sam had been looking through Cara's personal collection of sex toys and outfits for a short while. He was surprised that she didn't have quite as many toys as he expected but had easily more outfits. He figured she liked playing to peoples kinks rather than abuse herself on a regular basis with bizarre and exotic sex toys.

He found a small box tucked away behind some of her outfits that caught his interest. Inside was a collar that had a small name tag with 'Little Slave' written on it, two shiny leather bracelets and anklets with rings on them. Several cords with ring clips made it obvious what they were for, a very simple and forgiving light bondage kit. Beneath those were a selection of nipple clamps with different grips some which he thought could be fun but others worried him intensely.

As he pulled the box out he noticed one of her PVC outfits that looked very similar to the one his mother had worn only a few days ago. The colour was a very dark glossy purple with a few silvered studs. The stockings were a little different and the gloves looked to be shorter and missing the buckles but the top was almost identical. He began to wonder how Cara or his mother would look in that particular outfit.

"Found something you like Hun?" Cara's voice purred from across the room.

Sam looked back at her and smiled "Just something you or Mom would look great in."

She moved across to where he was and looked at the outfit he was admiring. "Ah I see, the outfit I got your Mom into has left a bit of an impression has it?"

Sam blushed and nodded. "It was really sexy, I couldn't move when I first saw her wearing it."

Cara giggled. "It took a while to get her into the stockings and gloves but from what your Mom said it was well worth it."

Sam chuckled "Maybe you'll help her with it again some time."

Cara ran a finger softly down his spine making him shiver lightly. "You might get more than you bargained for next time Hun." Sam let his mind wonder with thoughts about what she had just said, but had decided not to ask if she had something in mind for his mother to do while in costume. A sudden pinch on his backside brought him back to where he was. "So, found anything you want to play with?"

"Well I've not done anything like this before but I think I should try it at least once." He said sheepishly.

"Well let's see then." She said and moved over to the bed with him. Sam emptied the contents of the small box onto the bed. "Oh, want to try a little bondage do ya?" Sam nodded but looked a little uncomfortable. Cara noticed something was wrong "Everything ok Sam?"

Sam shuffled his feet a little. "Don't laugh ok, but I'm not really comfortable with being tied up."

Cara sat on the bed next to him and looked him over. "Sam, are you afraid of being tied up?" She asked softly. He nodded shyly. "It's ok Hun. Maybe if you tie me up you'll get a little more comfortable with the idea and maybe later you'll let your Mom and me tie you up once in a while."

Sam nodded "Maybe but I think it might be a while before I get that comfortable with being bound up."

Cara stood up and nuzzled his cheek. "I'll work with you on it ok Hun." She sat back on the bed and removed what remained of her clothing and encouraged Sam to do the same.

"Cara, could you put this on too and play the part?" Sam asked as he handed her part of the set.

Cara had just put on the anklets and taken what Sam had handed her as he turned away to finish undressing. Cara froze in fear. 'Little Slave' She knew it all too well, but deciding to try and put her fear aside she put the collar on before Sam saw her then strapped the bracelets on and sat in the centre in the bed, on her knees and looked at Sam with innocent eyes as she spoke almost childishly. "What's your pleasure Master?"

Sam turned to look at her in surprise. She looked so adorable, her large breasts framed between her arms as her paws came to rest on her knees; her innocent smile, love me eyes and slightly ruffled hair made her look complete. "You're good at playing the part Cara." He smiled and took the straps and figured out how to attach them to the bed.

"Thank you Master." She purred.

Sam finished attaching the straps to the bed and decided to try something simple to start with. "Lie on your back and spread your legs." He ordered her calmly. A moment later Cara was on her back with her legs parted. Sam attached the clips to the rings on the anklets and tightened them up just enough to stop her closing her legs.

Sam crawled onto the bed and gently nuzzled at her crotch. She was still soaking wet from before and she twitched as his nose brushed over her soft folds. Sam smiled and took a deep breath, fully inhaling her scent. "You smell really good Ca... I mean Little Slave."

Cara closed her eyes and held back a shudder. "Thank you Master. Do you want you use me gently or roughly Master?" Cara asked softly.

"We'll see when we get there sexy." He said, blushing as he realised he had just called her sexy so openly. He sucked on two of his fingers then gently rubbed them over her folds, which extracted a soft moan from her before he slowly slipped his fingers inside her.

She gasped and tried to push old memories out of her mind as Sam pleasured her. She tried to remind herself that Sam was new to this and even if they had, had a bad patch they were at least more comfortable with each other.

Sam continued to finger her for a short while, coaxing a melody of pleasurable moans from her as he touched deeper and more sensitive areas of her love tunnel. Cara screeched loudly as he brushed his thumb over her clitoris while pushing his fingers in as deep as he could reach then quickly removed them.

Sam moved up closer to her head and held his fingers over her muzzle. "Lick my fingers." He said in a level voice still trying to get in to his stride at being the dominating character. He watched as she slowly opened her mouth and seductively slipped her tongue out and over his fingers.

After a moment of letting Cara lick his soaked fingers Sam pulled them away and moved on top of her letting his fully erect member brush over her soaked pussy as his paws took a gentle but firm hold of her breasts. "Do you want me in you Little Slave?" He asked firmly.

"Yes Master, I want to you inside me. I want you to fuck me." Cara bit her lip after she spoke; she knew she was letting an old habit get the better of her, but couldn't understand why; she had done this with her former partner over a year ago she hadn't acted this way with him.

Sam massaged her large warm breasts for a little while as he brushed his cock over her time and time again, letting it lubricate on her.

"Please Master! I can take it any more!" she whimpered.

Sam was a little taken aback by her statement but he felt his verbal confidence rise the more she spoke in character. He chuckled to himself and decided to try being a little more forceful with her. He lent down close to her and whispered harshly in her ear. "Then take it, Little Slave!" As he finished talking he pushed his member deep inside her as he gripped her hips.

Cara's eyes flew open with shock. She wanted to call out Sam's name in pleasure and with joy the first time she felt him inside her, but she couldn't. Something darker was holding her back from what she wanted and what she did. "Break me Master, break me like a beast." She called as her paws launched around his back and gripped his shoulders holding him tight against her.

Sam could feel her legs struggling against their bonds as she tried repeatedly to wrap her legs around him as well. He grunted as he moved his hips against hers quickly and deeply, his balls slapping against her anus with every thrust making her gasp sharply.

They bucked against each other for a few minutes, changing their pace and position of their hips slightly. Sam found himself enjoying it a little more than he thought he would, but some how knew he'd like her movements and postures more if she was unbound, but still he wasn't willing to give up this game at the moment.

"Stop!" Sam commanded. Almost instantly Cara fell limp and her paws slowly slid off of his back. Sam sat up and pulled out of her slowly.

Cara looked at him with worried eyes "Are you not satisfied Master?" She asked quietly.

"Oh I am, I just want to try something else." He smiled.

She watched as Sam unclipped the bonds from her anklets then slowly sat up in the centre of the bed again. "What's your pleasure Master?"

Sam began to wonder if she was taking this a little too seriously, but decided he'd talk to her about it afterwards. "Get on your hands and knees Little Slave." Cara did as she was told and felt Sam reattach the bonds to her ankles so that she couldn't part her legs. She felt his paw press firmly but gently on her back making her lower her chest to the bed before he attached the bonds to her wrists to keep her upper body to the bed and spread out.

Sam doubted himself for a moment thinking he was doing it wrong or that he was being silly while binding Cara in these positions. He cast the thought aside and hoped that Cara would tell him where he was going wrong after they were done.

He crawled behind her and gave her backside a firm rub. "Ahhhhmmm...." Cara called out weakly as his paws continued to grip her rump.

"Still sore?" Sam asked with genuine concern as he eased up a little.

She wanted to say yes but something else had taken over now and she couldn't help herself. "No Master. Would you like to spank me some more?"

Sam knew she wasn't up to it and decided to ignore what she had said. He positioned himself behind her raised backside and placed his tip to her hot mound. With her legs closed he knew it would be different and might take more effort from him but he was now considering taking up Cara's earlier offer of exploring her tail hole.

Cara winched quietly to herself as Sam pushed his member back into her pussy roughly, his hips banging against still painful areas of her backside making small tears run down her cheeks. He gripped her hips and began moving faster and faster. He could feel a tightness in his shaft again as his knot began to swell a little. Sam knew he only had a little while before he was going to release himself, but he didn't want to fill her pussy; for now that was a privilege only his mother was entitled too. He would either fill her mouth or her ass. He knew he'd have to decide soon.

Cara was lost to another world, she felt completely helpless and lost. Her body was betraying her and she was feeling things from another time that she knew she shouldn't be. Her mind was also wandering between what was going on and some time in her past. Bitter memories were washing over her as she felt herself being penetrated again and again, quickly and harshly. She wanted to feel good about what was going on but something was desperately wrong.

Sam was almost ready to blow his load, he had made his mind up, and he was going to release himself in her tail hole. He decided to give her a little warning about what was coming and lent over her and growled seductively in her ear. "I'm going to cum in your ass. Are you ready for that?" He knew there wasn't really enough lubrication to do it properly but he had to do it just once with her.

Something snapped inside Cara, she began shivering wildly as she felt Sam pull back and slide out of her slit one last time. She felt his tip press firmly against her back passage and his paws firmly grip her waist as he got ready to thrust in deeply. "Here I come Little Slave!" He growled lustfully.

"NO DADDY! NOT LIKE THAT AGAIN, IT HURTS TOO MUCH!" Cara screamed at the top of her voice before she burst into a flood of tears.

Sam froze; the world around him suddenly seemed to shatter like glass and everything that Cara had been saying suddenly made sense. Sam pulled away from her quickly and tried to compose himself. He quickly thought back to when she had started talking like a real sex slave and what had happened before that. Everything had been fine right up until he asked her to play the part. Sam's eyes suddenly went wide with horror; the collar!

He quickly began to unbind her, completely removing the anklets and bracelets from her body. As soon as she was able to move freely she curled up as tightly in to a ball as she could make herself. Sam was about ready to fall into a blind panic as he called her name repeatedly. Seeing that she wouldn't respond Sam decided to make a move in the right direction. He brushed her hair out of the way and unbuckled the collar then removed it from her person and put it back in the box he had found it in and moved the box into the next room.

Sam returned to Cara's side and began gently stroking her hair, shoulder and side as she lay there crying. "Why didn't you say anything?" He pleaded, trying to get an answer out of her.

The minutes seemed to drag as Sam sat by Cara's side trying to comfort her. Sam felt helpless, he had never seen anyone have a psychological breakdown before; this was completely new to him and he didn't have a clue what else he could do.

It took around thirty minutes before Cara came around. She looked around her bedroom feeling a little confused; then she saw Sam staring at her with eyes full of concern. "Cara, are you ok?" He asked softly.

Cara suddenly realised what had just happened and launched herself and Sam, wrapping her arms around him tightly. "Sam, I'm so sorry you went through all of that."

Sam held her tight for a moment then slowly pulled away. "Cara I'm fine, I'm worried about you though. What happened? Why didn't you say anything?"

Cara eased up a little and began to pull the bed covers around her for comfort. "Sam, did you're Mom tell you that I used to sleep with my father?" He nodded and listened intently to everything she said. "I did; and for a while it was just sex with no strings attached and it was a lot of fun, but my dad wanted to go further and further. He started to ask me to do stranger and stranger things and we got to a point where he could make me play a role he wanted me too with the snap of his fingers."

Sam sat in total shock but continued to listen to her story. "I basically became his personal sex slave; the things he made me do still make me want to vomit some times. He even shared me with some of his friends on some occasions; they didn't complain because they got a good fuck out of me and didn't report either of us to the police. It was pretty much rape that they were getting away with because I didn't want to do it, I was forced to." She paused briefly to catch her breath.

"He finally pushed me so far that it began to affect me in my social life with my friends. Eventually I ran away once I'd managed to get enough money together and I managed to see a psychotherapist." Cara started shaking again and tears rolled down her eyes once more. "I spent two years in therapy getting over what my Dad had done to me, but I never mentioned his name or that it was my father that had done the damage."

"Cara I... I..." Sam wanted to say something supportive but words simply failed suffice what he wanted to say.

Cara looked into his eyes and saw the genuine caring and desire to help her. "Sam, there's nothing you can say or do that will change my past, but I know that if you could you would." Cara opened up the bed covers and exposed herself, innocently inviting him to join her. Sam moved next to her and hugged her tight as he felt the older collie's arms wrap around him and hold him warmly in her embrace.

"Cara, how did you ever get over something like that?" Sam asked in a voice barely above a whisper.

Cara gently stroked down his back and answered in a soft voice. "For a long time after the therapy I didn't; I couldn't stand the though of being with a male so I decided to become a lesbian, but that only lasted a year or so. I met a guy after I started doing some travelling and he was so nice to me, but I kept turning him down, even for a date. However I gave in after a while; I think the fight had just gone out of me at that point and I agreed to date him a few times. It's thanks to him that I realised that all guys weren't the same and didn't want me to be their sex slave."

"What happened?" Sam asked.

"We got on great, we enjoyed each other's company and the sex was great but we wanted different things from life so after a few months we drifted apart and went our separate ways. I had a small hand full of boy and girl friends while I was moving around a lot, but when I decided to settle down and have a life for myself no one really wanted to stay around, but I got over it and started living a good life and finally got back in contact with my family." She smiled softly.

Sam looked a little worried "You didn't get back in touch with your Dad did you? I mean after all he did to you."

Cara smiled; she was deeply touched by Sam's concern, it made her feel complete again. She leaned in and kissed him softly before continuing. "No, I haven't spoken to my Dad since I ran away. He left my Mom while I was away and married some brain dead secretary from another job he moved too." Cara snickered to herself quietly "You know what the real killer of it all is?" Sam looked at her not quite sure what to think. Cara softly scratched his chest and laughed dismissively and her own thoughts. "I was the one who came on to him."

Sam thought about everything for a moment and then opened his mouth to speak, but only realised how wrong what he was saying could be taken when he was finished. "He was an idiot to mistreat you then Cara."

Cara looked at him very seriously for a moment then in a heartbeat burst out laughing before he had a chance to apologise. She could tell from his expression he had meant it innocently and didn't mean to offend her in any way. She grabbed him and held him tight before giving him a long deep kiss. "I think I'm lucky to have met you and your mother, friends like you two are hard to come by." Sam Smiled at that and hugged her back and fell over with her as they embraced each other. They cuddled under the blanket for more than an hour getting to know each other a little better personally while occasionally letting moments of lust grab them.

* * *

Sara was glad to be away from the hospital, the repetitive questions and the multitude of tests had driven her to absolute boredom, but at least she had an idea of what to expect. All she had to do now was deliver the bad news to Sam.

Cara and Sam had dressed themselves again and had been lazing around on her couch for a short while when they heard Sara's pick-up pull up outside. Cara softly nipped his ear as he began to move, the squeak of surprise he made them both chuckle softly. Cara moved herself off the couch and headed down the stairs to let Sara in.

The two females smiled at each other and shared a hug on Cara's doorstep as they greeted each other then quickly went inside. "So what did the doc have to say?" Cara asked.

"Well she thinks I have some kind of hormonal imbalance which is making my breasts grow again, probably due to the sheer amount of sex Sam and I have been having." She giggled.

"Gigantomastia?" Cara asked inquisitively.

"Yes! How did you know about that?" Sara barked with surprise.

"Honey, how do you think these puppies came into being?" Cara chuckled as she grabbed her own breasts. "To be honest I think I was lucky. I developed a little later than the other girls in my school, but it happened so quickly when they started growing the doctors said they wanted to operate before it caused me any problems. Funny thing was that it stopped before they hit the mass that the doc's were prepared to operate on."

"You're one of the lucky ones then." Sara said with a smile of concern.

"Don't worry about it, just look at it this way. Sam will enjoy it as much as I will babe." With that said they both burst out laughing.

"Hey Mom." Sam barked as the two females entered the room.

"Hey Baby. Did you guys have a good time?" Sara asked as she hugged her son tight and kissed his cheek.

Sam and Cara stared at each other for a moment and smiled. "Yeah, I don't think you have to worry about us any more." Sam said softly.

Sara was overjoyed to hear that from Sam after all the tension it had caused. "I'm glad; maybe we can have a get together sometime before we have to head back home then." They all seemed to be happy with that arrangement.

There was a very brief silence before Sam spoke up again. "So what did the doctor say Mom?"

"She's going to have bigger tits." Cara joked with her friend and received a playful but slightly annoyed slap on the shoulder from Sara as they all laughed.

"Really?" Sam queried as he tried to relax from the outburst of laughter.

Sara nodded. "It looks like it, but there's something you're not going to like Sweetie." Sam raised an eyebrow in question to her statement. "No sex for a few days unfortunately." Sam looked really disappointed and groaned.

Cara moved behind Sam and placed her paws gently on his shoulders. "If he complains too much bring him back this way, I'm sure I can find a way to use all of his youthful energy." She winked at Sara over his shoulder.

Sam felt a jolt of electricity run down his spine as the two females spoke so openly in front of him. "What did you have in mind?" Sara purred as both she and Cara pressed against Sam, trapping him in a very comfortable female sandwich.

Cara murred softly to herself for a moment and playfully locked her eyes with Sara's. "Well the shop could do with a good clean." There was a brief pause before they burst out in hysterical laughter.

After they calmed down they all shared a group hug and nuzzled each other affectionately. Sam tightened his arm around his mother and kissed her deeply. "Mom, you're my mate and I wouldn't have it any other way, but do you mind if Cara can be my lover as well?"

Cara was stunned by what he had just said and couldn't find words to say. Sara smiled and held him tighter and kissed him deeply and passionately before she turned her gaze to Cara who still looked to be in a state of shock. Sara purred huskily at Cara and instantly grabbed her attention. "I don't mind at all, so long as I can have her as my lover too."

Cara couldn't help herself; she slipped her paws around their waists and pulled them closer. "Come here Lovers!" she growled seductively before giving them both long affectionate kisses.

After a moment they broke their embrace of their newly cemented friendship. "Well I think I need to get this one back to the cabin so he'll know what he has to put up with for the next little while."

"Alright, you two take care and be safe ok." Cara walked them to the door before she stopped herself. "Oh Sara, can I have a quick word with you?"

"Sure. Sam could you wait in the car?" Sara asked. He nodded and headed off to the pick-up after his mother handed him the keys.

Sam waited for a few minutes before his mother joined him and sat next to him in the pick-up. Sara started the large vehicle and pulled away, heading back to the cabin. "So do you want to tell me what you guys got up to, or do you want me to tell you about everything the doctor said?" She said cheerily.

Sam shook his head, his good mood seemed to drop off and he became very serious. "Mom, I think there's some things you need to know about Cara....."

To be continued......