Tommy said, “Jen, this is my mom Laura.”She got up and shook my hand, but she also gave me a hug.“And this is my older half-sister, Amy.”She c...ame over to me, and gave me a big hug too. She pulled back and we looked at each other. She said; “We are identical except that my hair is shorter.”Dad got up and said, “Jennifer please have a seat.”I sat down and asked, “What’s going on Dad?”“There are things I need to tell you: first your mom did leave us to have more sex; she was, or I should say she. Fuck mom that’s it keep sucking me just like that oooo fuck me you are a great cock sucking mother and I am glad your my mother, oh fuck me mom I cuming again, keep sucking that’s it keep..... oh fuck I am shooting my second load so soon mom, oh wow you can swallow a lot. It always surprises me just how much cum you drain from my ball every time you blow me. Hhmmm oh son you just don’t know how wet I am right now from you thinking I was that girl, I love it when your father describes the new. I wanted my first time to be special but that feeling was quickly overpowered by the overwhelming hormones.And then I saw him on a Friday night. He wasn’t the hottest guy I had ever seen but he was Mark. Taking that name now gives me a tingle. It was a party for the students of the college to meet the benefactors who would be sponsoring their scholarship and providing finances for the luxurious research work. We hit it off from the first instance. And no, I do not mean that we talked about. I stayed next to her for ten minutes holding my breath the entire time. Finally the pressure in my balls got too strong and I slipped off the bed then back to my own room where I fucked my fist, blowing my nuts into a t-shirt. The next morning after breakfast she caught me as we were getting ready for school “I had a weird dream last night, I dreamed that we were like homeless and sleeping together on an old mattress.”“Oh wow, that's totally fucking gross. You’re my big sister, being in a bed.