I wouldn't deny them the opportunity, and I did have quite a lot of work that I made for myself that I needed to get done, especially with a deadline ...in less than two weeks.After the Camaro left, my step-father noticed that I was still in the driveway. "Kristen left you?" She's taking Merry to the mall. I have some music to arrange." Will she be around for dinner?" he asked, thinking that there may have been something wrong."They'll both be here at five," I assured him."OK, son."I smiled at. "Good morning, my beautiful, sexy lover, " replied Mark as he caressed Vidya's breasts and his cock hardened in her hand.Vidya rolled onto her back and Mark rolled on top as Vidya ran his penis around her rapidly dampening pussy before guiding him in. They did not really have the time for a long lovemaking session but they did have the time for a quick fuck and Mark was soon thrusting his hips and Vidya had her legs behind him as they drove hard towards sexual release."Mmm, mmm, yes, yes,". I said yes for a long time. She told me I been wanting you a long time. I lay on top of her sucking her tits. She said to me kiss me again. I kissed her. I felt her hand glide my shaft in her wet pussy. I could not help myself. I was fucking her hard. I then slow down I wanted my sweet sister to cum again before I got mine. I felt it she came. Then I shoot my hot load in my sister. We layed there for few minutes. She got up went to take a shower. I thinking about what just happened. Not sure. Especially about me.There's always plenty to think about outside of home. My job at the University is demanding, but I think I am good at it. I graduated six years ago. I'm working as a researcher in the department of psychology and I feel I am making good progress towards my doctorate. The only problem there is Professor Dawney and that's my own fault.The two of us had a short, tempestuous, affair while I was working for my master's degree. I've always had an interest in the BDSM lifestyle -.