I never meant for the audio to change anything between us. It started as a late-night secret, something I clicked on after too many glasses of wine, headphones in, lights off. The stories were always the same flavor: siblings who couldn't help themselves, voices low and filthy, describing exactly what brothers and sisters weren't supposed to do. I told myself it was just fantasy, harmless noise to get me off. But the more I listened, the more the details started sounding familiar.
The way the sister's voice would break when she begged, the brother's rough commands, the wet sounds that followed. My body reacted before my brain could stop it.
One night I left my door cracked. I was on my bed, skirt pushed up, fingers working slow circles while the audio played. The story was about a brother catching his sister listening to the same kind of thing. He didn't knock. He just walked in and took over. My eyes were closed when the real door creaked wider. I froze, but the audio kept going, the woman's moans filling the room.
"Turn that off," my brother said, voice low. He was twenty-four, two years older than me, and he filled the doorway like he already knew what he was going to do. I reached for my phone but he was faster, grabbing it, listening for a second. A slow, dirty smile spread across his face. "This is what you get off to? Little sister listening to incest sex audio stories while she touches herself?"
I should have been embarrassed. Instead heat flooded between my legs. "It's just stories," I whispered.
He set the phone down but didn't pause it. The audio kept playing, the brother in the story telling his sister to spread her legs. My brother watched me, eyes dark. "Show me how you do it when you're alone."
My hand moved before I could think. I slid two fingers through my slick folds, circling my clit the way the stories always described. He watched every motion, breathing heavier. Then he stepped closer, unzipped, and pulled his cock out. Thick, already hard, the head flushed dark. "Keep going," he ordered. "But use your mouth on me while you listen."
I leaned forward and took him between my lips. The audio woman's voice filled my ears while I sucked my brother, tasting salt and heat. His hand fisted in my hair, guiding me deeper. "That's it. Just like those dirty little stories you love. You want the real thing now, don't you?"
I moaned around him, nodding. He pulled back, flipped me onto my stomach, and yanked my hips up. The audio was still playing when he pushed inside me in one rough thrust. We both groaned. He fucked me hard, the wet slap of skin matching the sounds from the phone. Every time the story brother called his sister a filthy slut, my brother said it too, voice rough in my ear.
We didn't stop when the audio ended. He flipped me again, spread my legs wide, and buried his face between them, licking and sucking until I came shaking. Then he slid back in, slower this time, grinding deep while he watched my face. "Tell me you want more," he demanded.
"I want it," I gasped. "I want you to fuck me like those stories."
He did. All night. We moved through every position the audios had ever described: me on top riding him, him taking me from behind while he held my hair, me on my knees swallowing him again until he finished down my throat. By morning we were tangled in sweat-damp sheets, the phone battery dead, both of us breathing like we'd run miles.
We didn't talk about stopping. Instead we started recording our own. Low voices, no faces, just the sounds of skin and breath and the filthy things we said to each other. We posted them under new accounts, listening back together afterward, getting off all over again to the proof that we'd turned fantasy into something real and raw and ours.
Now the only audio stories I need are the ones we make ourselves. And every time he walks into my room, I already know the ending.
