I felt my whole cock getting into her stroke by stroke. I can see her face in the mirror in front. Her expressions and the way she bit her lip made me...more and more excited. I started giving hard and fast strokes.She started moaning and was encouraging me to do it just like that. I was afraid that I might cum soon and was slowing down in between. She was demanding me to do it faster and faster when I slowed down. I tried to do as she said and maintained the pace controlling my urges to cum.She. .it was a great feeling but it didn't go on too long before she stopped. "I want you to fuck me. I want to feel my brothers cock inside me" she said as she moved off me.She laid back on the floor and spread her legs so I could see everything. She stuck two fingers into herself and spread her pussy while slowly moving her hips. "Do you want this? Do you want my pussy?"I got off the couch and kneeled between her legs just looking her over. She was so fucking sexy laying there with that naughty. She handed it to him. Jack ripped the package and took the condom out. He rolled it on top of his cock. Diane was on her back waiting for Jack to fuck her. He kissed her and played with her pussy with his fingers. Diane was squirming on the bed. He positioned himself over her and pushed his large cock into her wanting pussy lips. She moaned while he pushed inside of her.Diane and Jack were kissing passionately while Jack thrusted his cock in and out of her cunt. He couldn’t believe she was. I started getting hard and she asked "is that what dad has to?" I quickly adjusted and said "yes" without hesitation she slid her hand in my pants grabbing my hard cock and asked "why is it hard?" I replied "because you keep rubbing against it". She turned pulling it out and started rubbing it softly. As I opened my mouth to tell her to stop she started stroking faster then licked the tip she then looked at me and said "this is what mum does". As I look down she continues stroking so I pulled.