I never planned to fuck my own brother, but once my husband started ignoring my dripping cunt, the line blurred fast. It started the night I caught Mark jerking off to porn instead of pounding me like he used to. I was 32, horny as hell, and tired of pretending I didn't notice how my little brother Jake stared at my tits every time he visited. Jake was 28, built like a fucking tank from construction work, and single.
One humid July evening I showed up at his apartment after a fight with Mark. I wore a thin tank top with no bra, nipples poking hard, and cutoff shorts that barely covered my ass. Jake opened the door in just boxers, his cock already half-hard from the sight of me. "Sis, you okay?" he asked, but his eyes dropped straight to my chest.
I pushed inside and slammed the door. "Mark's a fucking joke. I need to get off." No slow talk, no guilt. I dropped to my knees right there in his living room, yanked his boxers down, and took his thick cock in my mouth. It tasted salty and real, veins pulsing against my tongue as I sucked him deep. Jake groaned and grabbed my hair, fucking my face like he had been waiting years for it. "Jesus, sis, your mouth is so fucking hot."
I pulled off, spit dripping down my chin, and stood up. "Bedroom. Now." He carried me there, ripping my tank top off and sucking my nipples hard while I ground my soaked shorts against his bare cock. We didn't bother with foreplay niceties. I shoved my shorts and panties down, climbed on top, and sank onto his dick in one wet slide. My cheating cunt stretched around my brother's cock, clenching tight as I rode him raw. "Fuck me harder than my husband ever does," I demanded. Jake flipped me onto my back, pinned my wrists, and slammed into me balls-deep, the bed slamming the wall with every thrust.
I came first, screaming his name while my pussy spasmed and squirted around him. He didn't pull out. He flooded my cheating hole with thick ropes of cum, breeding his own sister like it was the most natural thing in the world. We lay there panting, his cum leaking out of me onto the sheets. "This can't be the last time," I told him, already planning the next lie to tell Mark.
It wasn't. Every week I found excuses to visit Jake. Sometimes I'd text him from the car outside my house: "Mark's asleep. Come fuck your sister's ass." He'd show up, bend me over the hood of my car in the dark driveway, and pound my tight hole while I bit my arm to stay quiet. Other times I'd sneak him into the guest room while Mark watched TV downstairs. Jake would eat my pussy like a starving man, tongue fucking my slit and circling my clit until I gushed all over his face, then he'd slide in and fuck me slow and deep so the wet sounds stayed low.
The taboo made it hotter. Knowing I was a cheating wife who let her brother use every hole turned me on more than any normal sex ever had. One afternoon I let Jake fuck my tits while I described how Mark's dick felt small compared to his. He came all over my face and neck, then watched me lick it off my fingers. Another night I rode him reverse cowgirl, watching his cock disappear into my married cunt in the mirror, my wedding ring glinting as I spread my ass cheeks for him.
We never talked about stopping. The risk only made us dirtier. I'd call him "little brother" while he railed me from behind, or beg him to fill me up so I could go home with his load still inside me. Mark never suspected a thing. He just thought his wife was suddenly more affectionate after her "girls' nights."
By the time summer ended, Jake and I had fucked in every room of his apartment, my car, and once in the woods behind my house while Mark was at work. My body belonged to my brother now. I was a cheating wife who craved incest cock, and I wasn't giving it up.

Every time Mark touched me I thought about Jake's hands instead, and it made me wet enough to fake it. The secret kept me coming back for more, raw and filthy, no apologies.