We were a little tangled up with me leaning over him and him working on me. I reached around and stroked his stomach just inside his waist line. He st...rted to moan with my cock in his mouth. I reached in his pants and took his soft cock in my hand. I had never felt another guys cock before. It felt so fucking good. I squeezed it a few times and he responded immediately. This time the both of us almost lost it. I went straight to the edge of cumming and he fell limp in my lap with a deep moan.. He told me to strip which I did quickly, as I bent down to slip off my briefs I felt his finger forced hard into my anus making me gasp. He started finger fucking me hard while slowly pulling my foreskin back and squeezing my cock hard. He had a very strong grip and he was lifting me up onto tip toe by my cock it felt. Finally he let me relax a bit and took his finger out and told me suck his cock so I sank to my knees and put my lips around that massive bell end and started to lick and suck. Just looking at Shelly was really making me get really horny. She looked so good. “It’s been such a long time. How have you been? Are you dating,” I asked Shelly. “Things are really good with my job. I’m not dating anybody right now. How are things going with you?” “My job is going well. I was going out with somebody, but it didn’t really work out. We liked each other, but in the sex department he wasn’t really pleasing me.” Shelly just smiled and was listening to everything I said. She. The desire to visit my dad at night had been suppressed for a few days as I distracted myself with scholarly activity, but now that it was finished and school went back to normal, I realized that I was free to return to my nightly experiments. The SAT results wouldn't be in for a few weeks anyway, and there was nothing I could do to speed that up, so I might as well find something to do in the mean time.The experiment had worked well so far, I was quite sure of that. The serious one, that is..