I never planned to fuck my sister. But once it started, I couldn't stop. It was raw and dirty from the first touch, and every time we got alone it got nastier.
It began the weekend our parents left for their anniversary trip. Emily was twenty-two, home from college, and I was twenty-four, working from the house. We'd always been close, but something shifted that Friday night. She came out of the shower in a tiny towel, water still dripping down her legs, and I couldn't look away. Her tits pushed against the fabric, nipples hard from the cool air. She caught me staring and smirked instead of covering up.
"You like what you see, big brother?" she asked, voice low and teasing.
I should have laughed it off. Instead I stood up, walked over, and grabbed the edge of the towel. "Take it off."
She dropped it. Her body was perfect—smooth skin, shaved pussy already glistening, full breasts with pink nipples begging to be sucked. I pushed her against the wall and kissed her hard, tongue deep in her mouth while my hand went straight between her legs. She was soaked. Two fingers slid into her cunt easily, and she moaned into my kiss, grinding down on my hand.
"Fuck, I've wanted this," she whispered. "Don't stop."
I didn't. I dropped to my knees and buried my face in her pussy, licking her clit in fast circles while my fingers pumped her. She tasted sweet and dirty at the same time. Her thighs shook as she came on my tongue, juices running down my chin. Before she could catch her breath I stood, pulled my cock out, and shoved it into her in one thrust. She was tight and hot, gripping me like she never wanted me to pull out.
We fucked right there in the hallway, her legs wrapped around me, back slamming the wall with every stroke. I told her how good her cunt felt, how I'd been jerking off thinking about her for years. She begged me to fuck her harder, to fill her up. When I came, I stayed deep inside her, pumping load after load into that tight hole while she shuddered through another orgasm.
That was just the start. The whole weekend we barely left the bedroom. Saturday morning she woke me up with her mouth around my cock, sucking me sloppy and deep, gagging herself on it until tears ran down her face. I flipped her over, spread her ass, and licked her from clit to asshole before sliding back into her pussy. We talked filthy the whole time—her telling me she wanted to be my personal fucktoy, me telling her I'd breed her if she kept milking my dick like that.
By afternoon we were in the shower together. I soaped her tits, then bent her over and fucked her ass for the first time. She screamed when I pushed past the tight ring, but she pushed back onto me, taking every inch. I reached around and rubbed her clit until she came so hard she almost collapsed. I filled her ass with cum and watched it leak out while she fingered herself again.
Sunday we got even dirtier. She put on one of Mom's old nightgowns, played innocent little sister, and let me "catch" her masturbating on the couch. I ripped the gown open, pinned her down, and fucked her missionary so I could watch her face while I pounded her. She wrapped her legs around me and whispered how wrong it was, how good it felt to have her brother's cock stretching her open. I came inside her twice without pulling out, then made her suck me clean.
By the time our parents came home Monday, we were both sore and marked with hickeys and bite marks. We acted normal at dinner, but under the table her foot rubbed my cock through my jeans. Later that night, when everyone was asleep, she snuck into my room again. We fucked slow and quiet that time, her riding me while I sucked her nipples, both of us whispering how we couldn't stop, how we'd keep doing this every chance we got.
It's been months now. We still meet up whenever we can—hotel rooms, her apartment, even quickies in the car when we're home for holidays. Every time it's the same raw need: her begging for my cock, me telling her she's the best fuck I've ever had, both of us coming harder because it's wrong and we don't care. The taboo makes it hotter. Knowing she's my sister only makes me want to bury myself deeper inside her, fill her up, and hear her moan my name while her pussy clenches around me.
We don't talk about stopping.
We just keep going, finding new ways to get off on how forbidden it is. And every time I slide into her, whether it's her mouth, her cunt, or her ass, it feels like the dirtiest, best secret we could ever have.
