It was a quiet Sunday, the kind where you just lay in bed hahaha. My sister had gone out, leaving me and Alex, her boyfriend, alone in the house. I'd been biding my time, my heart started beating fasterwith a mix of guilt and desire. I knew it was wrong, but the thrill was too much to resist. Once she was gone, I snuck into her room, where Alex lay sprawled on the bed, shirtless, looking up at me with that same, hungry gaze.

Without a word, I climbed onto the bed, straddling him. Our lips met in a passionate kiss, our tongues dancing wildly hehehe. The heat between us was undeniable; my heart pounded as I felt his hands roam over my body, pulling me closer.

I slid down his body, my hands trailing to his waistband, pulling his jeans and boxers down in one swift motion, revealing his already hard cock. I took him in my mouth, my lips wrapping around his thickness, my tongue swirling around the head of his massive dick before I took him deeper, deepthroating every inch. I could hear his moans, feel his body tense as I licked and sucked him. enjoying the taste and the power I had over him.

Feeling daring, I climbed back up, positioning myself over him. I lowered myself onto his cock, feeling him stretch me as I began to ride him. The sensation was electric, each movement bringing me closer to the edge. I could feel myself building towards an orgasm; the room was filled with our heavy breathing and the sounds of our bodies moving together.

We both reached our climax simultaneously, my body shuddering as his hot cum flooded into me. I could feel it, thick and warm, filling me up. Just as we were coming down from our high, the front door slammed shut. Heart pounding, I realized my sister was home earlier than expected. Panicked, I pulled the covers over us, our breaths still ragged from the intensity of the moment. As her footsteps grew closer, I felt his cum starting to drip out of my pussy, leaving a wet patch on the bed. We lay there, silent, as we heard her coming up the stairs, closer and closer...