My Sexy Step Sis was Horny so I Cum so Badly on her Belly.

I was watching TV when my step-sis walked in, her red hair cascading down her shoulders, and I swear, I could see the heat between her legs. She was wearing a tight dress, and her curves were on full display. I couldn't help but stare as she approached, her eyes locked onto mine. "You know, I've been feeling a bit... horny lately," she whispered, her voice sultry and enticing. I was shocked, but my cock was at full attention. "You want to fuck me?" I asked, my voice barely a whisper. She nodded, a cheeky grin spreading across her face. "I want you to cum so badly on my belly," she said, her eyes gleaming with desire. I couldn't believe what was happening, but I was game. We moved to the bedroom, her tight ass swaying with each step. I couldn't resist, I grabbed her, spinning her around and pulling her close. Our lips met in a fiery kiss, tongues dancing as we explored each other's mouths. She pushed me back onto the bed, her hands roaming over my body as she straddled me. I could feel her heat through my pants, and it was driving me wild. She slowly unbuttoned my pants, her eyes never leaving mine as she pulled out my cock. It was rock hard, ready for her. She wasted no time, sliding down onto me, taking every inch. I groaned as she started to ride me, her hips moving in a perfect rhythm. Her tits bounced with each thrust, and I couldn't resist grabbing them, squeezing them as she moaned. "Oh, fuck, you feel so good," she panted, her face flushed with desire. I could feel my orgasm building, and I knew I wouldn't last long. "Cum on my belly," she demanded, her voice hoarse. I grabbed her hips, thrusting up into her as I came, my hot cum shooting out onto her stomach. She laughed, looking down at the mess I'd made. "I told you I wanted you to cum so badly," she said, a satisfied smile on her face. I couldn't believe how hot she was, and how much I loved fucking her. This was going to be a night to remember.