I could not help it. I started getting hard again. It was not fair. Let’s review. I had been horny ever since our run. Seeing Susan bouncy and sweat... always did that to me. Then I had pressed my cock into her ass, while giving her a massage. Next I see her naked for the first time. The tits I had imagined only in my dreams were beautiful, clearly they were made to be sucked. Seeing them wet from the tub, seeing her sweet, plump ass when she stood up, seeing those tender pussy lips peeking out. My heart dropped when one of the boys turned around before walking off into the bushes, and said that he’d see me in school, and then walked away as they all walked away laughing. I wondered what that meant? Their laugh sounded sinister, yet I didn’t ponder too long about it as I needed to find my towel and get home. After getting safely at home, and as I lie in bed, I began to think about what all had occurred this day. Part of me felt like I had been assaulted, yet, it gave me different. “I will fuck her and use her body for my pleasure,” again it clenched, “whenever I choose, and she will complete tasks I set for her.” My pussy seemed to be clenching continuously and I had to work hard to fight off an orgasm. “Do you understand?” “Yes.” “Do you agree to my terms?” Master demanded. Andy paused, so Master continued, “How has she reacted to what I've said?” “Strongly. Her pussy keeps clenching when you say certain things.” “Oh, does it now?” Master grabbed my hair and pulled.. I was surprised she was getting so horny thinking of such a thing, as fist fucking me. She has always fucked me with a strap-on dildo and my ass will take it with ease now. She loves to get behind me and insert her John Holmes 13 inch rubber cock all the way up to the balls.It took about 3 months of ass fucking before I could take all of that rubber cock up my ass. But now I enjoy it and it massages my prostate and I shoot a stream of cum out of my cock that will amaze you. She likes for me to.