Trying Lesbian Sex with My Step-Sister

I told Brin the truth and she laughed. She thought I was joking until I kissed her. Hard. Her laugh died against my mouth and turned into a soft moan that went straight through me. She didn’t pull away. Just looked at me for half a second before she grabbed the back of my neck and pulled me closer. We moved fast after that. Her shirt came off first. Mine followed. We stumbled into her room without bothering to close the door all the way. Bra straps slipped. Her skin was warm and smooth under my hands, and when I pushed my thigh between hers, she rocked against it like she’d been waiting for the chance. We kissed like we’d been holding back for years. Wet. Messy. Her tongue curled against mine and I swallowed every sound she made. She tasted like cherry lip gloss and something sweet underneath. I got her jeans off next. Black lace, already damp when I slid my fingers underneath. She spread her legs wider for me without asking. I rubbed slow circles over her clit until she pushed my hand lower, silently demanding more. Two fingers inside and she gasped, hips jerking up to meet the thrust. She was tight. Hot. Slick coating my knuckles with every stroke. Brin came first. She clenched around my fingers, back arching, a broken little whimper leaving her throat. She didn’t stop shaking until I kissed the inside of her thigh and started all over again. Slower this time. Softer. Drawing it out until her hands fisted in the sheets and she begged quietly, then louder, thighs trembling around my shoulders. I stayed between her legs until she pulled me up by the hair, mouth open, eyes dark. We kissed again, slower, tasting her own arousal on my lips. She tasted sweet there too.