Kelly stood topless in front of the mirror. Her breasts definitely were bigger now; her older sister told her she was all done growing and she'd have to live with those little titties for the rest of her life. But she was wrong. They were definitely getting bigger. Maybe it's true what some of the kids at school say, that the more you have sex the bigger your boobs get.

Chris definitely likes her breasts, he plays with them all that time. She lifts her hands to her breasts, lifts them up, pretending she's offering her breasts to Chris. Then she starts squeezing her nipples: she wets her fingers in her mouth, then takes each nipple between her thumb and forefinger and gently squeezes, watching her little teats, her little nubbins, poke out. She wets her fingers again--gotta keep them nice and wet, so they're like a mouth--and takes each nipple between her thumb and forefinger again, and this time she starts rolling the nubbins back and forth, gently, nothing aggressive, not yet. Her nipples are tingling now, and she is getting wet between her legs.

She takes her hands away and looks in the mirror. Her nubbins are stiff, sticking out a half-inch from her nipples. She turns to the side so she can see them in profile. They look funny, sticking out like that. Then she wets her fingers again and pinches her nipples, watching her stiff nubbins stick out even further.

She pinches the nubbines now, pulling on them, pretending Chris is biting them like he likes to do. She can feel her underwear getting wet now. She's lucky to have a "breast man" for a boyfriend, isn't she?

But lately...

Kelly puts her shirt back on and sits down on her bed and starts thinking about Erin. Erin is a new girl in school, and they've been hanging out together a lot. Two nights ago, Erin told her she was bisexual, and Kelly said she was, too, even though it isn't true, she'd never been with a girl before and never even really thought about it. They lay down together on Erin's bed and they started hugging and kissing and then they put their hands down each other's pants.

Even though she made out with Erin and felt her down and everything, she still doesn't think of herself as a lesbian or bi. Fingers are nice, especially someone else's fingers, but it doesn't compare to having a big cock inside you. Besides, Erin never played with Kelly's breasts. She really wanted her too, and she kind of wanted to touch Erin's breasts, too, more out of curiosity than anything else. But for whatever reason, they both skipped that part and went right down the pants instead. She figured girls probably just aren't as interested in breasts as boys are, since they have a pair of their own and everything.

So Chris is better, because he's got a cock and loves to play with her tits. But the thing about Erin is, she's so gentle. It was really nice to be with someone who's really gentle. Chris isn't really gentle, he definitely likes to be rough. Kelly liked being with Erin because she was gentle.

---

Chris asked her to get on her hands and knees on his bed, and so she did; then he put his hand on the top of her back and pushed her down so that her face was in the pillow. She didn't realize at this point that he had anything "special" planned, but when he grabbed a tube of something from his bedside table and started rubbing something cold and thick on her anus, she suddenly became fully aware of what he as planning to do. She'd heard about this before, but she couldn't imagine that anyone she knew would ever want to do it, especially with her, especially when she's only twelve years old!

She felt him grab her buttocks and spread them, then felt his boner, his head, rub against her anus. "Wait," she said. "I don't..."

He didn't respond. He just simply pushed the head of his cock into her anus.

Kelly felt a searing pain as Chris's huge, thick head forced her anus open and pushed into her. She buried her face in the pillow and let out a long, painful wail--"Fuuuuuuuccccckkkkk!" He kept pushing, even though she was wailing. He was forcing her anus to stretch open even further to accommodate the full girth of his head. His head seemed gigantic to her at that moment, enormous. It was tearing her apart!

Finally he stopped pushing, she felt her anus squeeze tightly around his thick cock, and she could feel his head inside her, having pushed completely past her anus. Though she was still in pain, she managed to lift her head from the pillow.

"What are you doing?" she said, breathless.

"I'm fucking you in the ass," he said.

"Don't," she said. "Please stop, it hurts."

He pulled back. She felt her anus momentarily stretch open further to allow the ridge of his head to pass out, and then she felt relief as his head exited and her anus was, mercifully, allowed to close.

But she should have known that the relief was going to be short-lived. The second he'd left her and given her anus such blessed relief, he started pushing back in. Searing pain again, face buried back in the pillow, "Uuuggggghhhh!"

She felt the ridge of his head stretch her anus open as far as it could go, further than she ever imagined it could, and then she closed tightly around him, his head inside her again. The moment he had gotten his head inside her, he pulled back out, her anus stretching again to allow the ridge of his head to exit, then relief again as her painful muscle was allowed to close.

In again: stretching, searing pain, face in the pillow, moan; then out: stretching again around the ridge of his head, followed by the wonderful relief. Then in again, pain, then out again, relief; then in, pain, out, relief.

"Kelly," he said, as he set a steady pace, methodically violating her virgin asshole with the head of his cock, "touch my balls."

She reached her hand between her legs and grabbed his testicles. She could squeeze really hard, pull on them, make him hurt like he was hurting her; but she didn't want to. She wanted to caress them, make them feel good. Her role, she knew now, was to let him do what he wanted to her, and do her best to make him feel good while he did it. That's what it means to be a woman, that's what it means to be a man's lover. He's the one with the cock, he's the one that does the violating. The woman role is to learn to enjoy being violated.

And so she sat there on her knees, her face buried in the pillow, gently caressing his big, wonderful balls and trying to enjoy the feeling of his giant head stretching her anus open. It didn't feel good, she couldn't bring herself to enjoy it, although it did hurt less now that she'd gotten sort of used to it. But there was something about the pain, now that it wasn't so intense--something about it that makes her feel good, makes her feel like she's doing her duty, letting him do what he wants and helping him to feel good, and that makes her feel like a woman.

"Oh, Kelly," he said, and she felt him going deeper, she felt his head burrowing further into her and her anus sliding down his cock. He pulled back, her anus sliding back up, but he didn't leave her this time. No relief now, just pain; somehow she knew she would get no more relief until he was done. Back in, her anus sliding down, clamping tight, then back out, sliding up, clamping tight; in, clamp; out, clamp; in, out; in, out. "Oh Kelly, you little whore, you little fucking whore! Oh my god!"

And then she suddenly felt the strangest sensation. She knew what it was, she knew he was ejaculating in her ass. It felt like something was boiling inside her, hot and liquid and oh-so-very strange. He reared back and plunged in, going much deeper this time, lubricated as she was by his come. She felt a huge, stiff rod deep inside her, she felt the boiling hotness. She felt very dirty; she felt violated. She felt like she was being raped.

He held is penis inside her for another moment, impaling her. She didn't even care about the pain anymore, she just wanted his dick out of her. "Oh, you whore," he said, "you dirty little whore." And then he pulled out. Finally, relief!

He didn't say a word, he didn't kiss her or even touch her, he just left the room. She sank down, feeling very used and dirty. His come, and god-knows-what-else, was leaking out of her anus. He came back with a towel. "Here you go, Kelly," he said, gently putting it between her legs and leaning over to kiss her on the back of her head. She turned and looked at him and gave him a feeble, exhausted smile.