Jumping on his cock (step brother)

Sorry for not posting for a long while. I will try posting more often. Stories will be short though.

I caught my step brother wanking one day with his door slightly open, my mother was out and it was only us in the house. He seen me walking past and continued regardless, his cock was huge, I could tell he didn't have long left. I stripped completely naked just out of his sight and shouted
"tell me before you cum!" I walked into his view, his eyes near bursting. I began playing with my self to get my self wet. It didn't take long for me to feel my juices. Within a minute he called me. I walked closer to him and told him to slow down. He had his laptop open watching porn,: a big boobed girl in the cowgirl position. I crept closer to him, I could see he was ready. He stopped. I grabbed hold of his solid cock and slipped it in between my legs. I had my back to him. He instantly grabbed my tits. His cock was wet enough to just slide in. I began bouncing up and down, while the porn was on in the background. I bounced slowly while watching the porn myself. He let out little moans, I knew he was ready to pop. I leaned forward and began bouncing faster, within seconds he started shaking and whimpered
"I'm cuming" I continued bouncing hard and fast. I felt his cum burst inside me, his cock throbbing. I pulled out away from him after a few more bounces and told him I was going in the shower. I turned my head back to see his bright red face.
"Did you enjoy that?" I asked. He simply nodded.