Millie is my actual ex girlfriend, see [a true story about her here.](https://www.reddit.com/r/gonewildstories/comments/7pgbeg/angry_fucking_my_ex_in_the_park_next_to_her_house/) While she never admitted it, this is what I imagine went on in her head:
You hadn’t really thought about it before I said something about it. It certainly caught you off guard. “Have you ever thought about your brother?” What a weird thing for me to have asked about. It does make you remember that boy, that kid whose father your mom dated briefly. You remember how attracted you were to him; how, as a young teen, you would fantasize about what would happen when left to your own devices. Its not like that was a novel concept, you closed your eyes and imagined what different boys’ cocks would look like all the time. But there was something especially taboo about him though, something so wrong just because he could become your step-brother, and you remember how much harder you would cum when you thought about him.
But Steve? That was a different story. Of course you had never thought about Steve. He is your brother, that would be wrong. Steve’s friends though… You found yourself replaying the images of those tanned boys playing soccer without shirts on when your parents would bring you to his rec games. You would get home and head straight for your room, and just as soon as you would reach your bed, your hand would have slid under the waistband of your loose jeans, your finger easily parting your wet lips, your pussy tightening around it while you fingered yourself to the memory of their muscular backs.
To be fair, though, its not like you weren’t curious. You remember being younger and watching him walk out of the shower with a towel wrapped loosely around him. You could never really help letting your eyes scan down his body to where the top of the towel covered his lower abdomen. Most of the time it was a little loose, and you could see a little lower, where his happy trail started to widen. Once you even saw the very beginning of his dick, but he was rushing into his room that day, so it wasn’t a very good look. It’s not like you wanted to fuck him, but still, you couldn’t help but look.
But then, the thought popped in. For a brief second, the image of Steve completely naked before you, burned in your imagination. It was shocking, and obviously an accident. You went to pick you book back up off of your desk when you realized your hand was clutching the fabric of your t-shirt right above your stomach. When you released it, your hand went straight underneath your shirt and lightly grabbed the smooth skin of your belly. It felt good, and this time the image of your naked brother lingered a while longer. Also this time, his cock was hard, and he had his hand wrapped around it. It was very hard to stop thinking about this image, even thought it was making you slightly nauseous. Suddenly, you were very aware of how hard your nipples were, you could feel them straining against your tight shirt, and your legs were crossed tightly in front of you. “This is wrong,” you thought. “I am wrong.”
And yet, when steve’s hand started moving up and down on his dick in your mind, you knew it was too late. You were wearing tighter pants that day, and it frustrated you how hard it was to pop open that button. Once you did, the zipper came down fast, and you were easily able to slide your hand under it. When you would touch yourself, you always loved the feeling of running your fingers through the patch of hair you kept before they reached your vagina. This time was no different. You pushed your hand into your pants and underneath the elastic of your panties. You hadn’t started wearing thongs yet, but these boyshort panties made you fell sexy. As your middle finger reached your clit, you remembered that you had them on in front of steve that morning. You had walked out quickly and you thought you saw his eyes dart down towards your butt momentarily. Suddenly it occurred to you, “was my brother checking out my ass?” It was upon asking this that your plunged your middle finger into your pussy. You couldn’t believe how wet you were, the slickness of your inner walls making fingering yourself deep as easy as it could be. While your finger was curled inside of you, the image in your head didn’t waver from Steve rubbing his dick, but you imagined now that he was thinking about you, thinking about your big butt straining the elastic of your panties. The thought of whether your brother imagined pulling your underwear down and sliding is big dick inside of you was slightly sickening, but you couldn’t understand why it made you orgasm harder than usual, at least as hard as when you were with me.
Of course, you didn’t stop after your first orgasm. You only became more intent on touching yourself. You didn’t want to stop thinking about your brother either, only this time you were kneeling in front of him. You’d never even seen anyone’s cock other than mine, and you had only put it in your mouth a couple of times, but you felt your fingers start moving faster inside your pussy when you imagine yourself licking your brother’s dick. In your head, his dick curved up a little bit, and you let your tongue run up and down it as he moaned your name. Finally, right as he grabbed the back of your head, you took his whole cock in your mouth. The thought of having Steve’s penis fill your mouth was making you so wet, you could hear the sounds of your two fingers moving so quickly inside of you.
You were too far gone at this point to stop. You imagined him in your room, telling you to lay down on your bed. He kneels beside it and doesn’t bother to undo your jeans, he pulls them right off of your skinny body. You imagine your brother bury his face between your legs, part your wet lips with his tongue, and start licking his sister’s clit, your clit, the very clit you are using the fingers of your other hand to rub in fast tight circles. The thought of seeing his curly blonde hair right beyond the curly light brown hair between your legs makes you cum again. You barely finish coming before you imagine him climb onto the bed with you and begin kissing you, feeling his cock pressing up against your entrance. In this moment you realize that you’ve always wanted to kiss your sexy older brother, to feel his tongue dance with yours. You’ve always wanted to feel his big dick against your body. Until this moment, you’ve avoided thinking about it. But now, you slide a second finger into your pussy and you imagine that it’s Steve entering you. He tells you he loves you as the length of his penis fills you completely. He starts off slow but he knows his sister wants this, and needs this. He goes faster and faster, he’s grabbing your tits and stroking your hair, until you feel him explode inside you, filling you completely with your brother’s cum, with your own DNA. This sends you over the edge, and you need come back to reality and grab a pillow to scream into so your parents don’t hear you masturbating. Now that you’ve broken the seal, Steve is often the object of your fantasies.
Source: reddit.com/r/eroticliterature/comments/86bgny/millie_cant_stop_thinking_about_her_brother