Slowly I opened my shorts and started rubbing my dick by watching her. She didn’t open her eyes for some time. Later after a few minutes, she opened...eyes and she was shocked I am watching her and rubbing my dick. She said, “What is this bro why you removed your shorts?”I told her what you are doing the same thing I am doing. I asked her can we have sex. She said no we should not do sex as we are bro and sister. I started convincing her but she was not accepting of sex. Then we came with one. After mark left i got dressed and went downstairs to leave mark alone for a while but i could hear moans coming from his room so i knew he was jacking off, i decided to brush it off but it sent a chill through my body knowing that my son was jacking off to the immage of me. i went and read a book until it was dinner time. i prepared dinner for mark and i and called him down stairs when it was ready. dinner was dead silent until i finnaly grew up the courage to talk to mark. so mark you know. "Cathy moved a little closer to me on the couch and said in a whisper, "What you saw me and Johnny doing this afternoon was only the second time that we’ve done anything like that."I raised my eyebrows a bit surprised. "Wow. To watch you two, I would’ve never guessed." She cocked her head and smiled at me. "Why would you think that, Mom?" "Well... ...from what I could see... ...you looked pretty. . . . . .comfortable with…it." I told her as I nodded my head suggesting she knew what I was. Mom smiled, with years running down her face."Even though I've suddenly turned into some slutty MILF?" I like my MILFs slutty."I had joked because Mom was grinning, but the suddenly serious expression that dropped onto her face made me think that it had been a bad idea."I know you never intended to lose your virginity to me. That was supposed to be special"I could see the guilt in her eyes and, in an attempt to assuage it, consciously decided to be completely honest. I even told her as much."I.