She got up on her tiptoes apparently wanting to feel my cock on her pussy. I lifted her up and my cock was soon under her.She moaned and wrapped her l...gs around me as I held her up by her ass. She allowed my cock in and groaned into the kiss. I walked us to her bed and lay on my back, we were still kissing.We can’t, we shouldn’t,” she said as she began to fuck me.I held out until she had pretty much fucked herself out then I allowed myself to fill her pussy with my cum.A few moments later Mom. While doing so I got so worked up my cock was erect again, she pulled it and said she was glad I wasn't done. I told her I was far from done and that I wanted to go down on her. She said she was glad to hear me say that. She pulled up her dress and I pulled down her panties...... Again my jaw hit the floor at what I saw..... She had a penis I couldn't believe what I was seeing. I looked up at her and didn't know what to say. Then she broke the silence, she said what did you change your mind.. Seeing that i had 30 more minutes left in the session i said yea lets do it. before i knew what was happening his hard cock was rammed up my tender ass. As he did this my dick got hard again. a few minutes while he fucked me up the ass he finally saw that my little 13 year old dick was hard he began to stroke it. After 6 minutes of him fucking me and stroking me he said im going to cum soon do you want me to cum in your ass in you mouth or on your dick and I said try to do all three so he blew. I picked up her dress and escorted her into my bedroom."Susan," I asked calmly, "are you on the Pill?"As she got up on the bed pulling the covers down, she said, "Yes, I am — Rich."I started to undress myself, and I started thinking about the lottery and wondered aloud, "We need to tell Dad in the morning?" What?" We need to tell Dad about this!"About our having sex?" No, no, no — he's a CPA, he'd know the smart way to deal with the money — and will help us know what to do," I said crawling.