I don’t know what I would do without my big sister.”She laughed and rather than get up, stayed in my lap and started to rub one of her concoctions...into one of my biceps. On the face of it, it was nothing more than a way to access my arms, but after that morning, there was a strong undercurrent. It was good, she was good, within minutes, the muscle was fully relaxed. I brought the newly healed arm down and held her around her waist as she started on the other. Again, within minutes, my arm was. When I was fully inserted in her pussy, she stopped and sat still on my cock. She had a huge smile on her face and told me that this was the biggest fucking cock she ever had felt in her pussy. She said she had always dreamed of fucking a truly huge cock and did not want to miss this opportunity. She asked what my names was and told me her name was Mary. Then she asked me to try to hold back and not cum to quickly because she wanted to enjoy this as long as she could. She slowly started to ride. She just listened and made the appropriate understanding noises.I went on to tell her how I knew that I would have to give in to my feelings some day, and that I asked Jeff for the favor."What exactly did you ask him for?" she asked."I asked him to own me," I replied. "From the beginning of the summer until when I graduate, I would do anything he asked. In exchange, he has to treat me badly. He has to humiliate me. He has to hurt me. He has to do all those deep dark things that I fantasize. I was rubbing her leg and her eyes were on my bulge. She was seeing how my cock was moving up and down in my shorts. She asked me to take cream in my hand and massage. I lifted her panty and I massage her legs. My cock was become too hard now, she asked me “whether I masturbate “and I told yes. She asked me why I am hesitating and it is a natural thing for boys especially and even girls. She now asked me whether I think of her and masturbate... I said yes with a naughty smile. She inserted her.