He has just gone now, off to work and back to my sister. I have dreamed of having sex with my lovely brother in law for years. Ever since I met him I think. He had the hots for my sister, and I was ten years younger, and did not stand a chance. We have been mates all along, an occasional kiss and cuddle was all. Margy was not really that interested in him for a long time. She had a succession of boyfriends and breakups, and he was always there for her. Her mate and my mate. He wanted Margy and I wanted him.
I finally broke up with my long term boyfriend just at the time that he and Margy finally fucked together. I cried a lot at that time. Alone in my room at nighttime listening to them fuck in the next room, thinking of his semen shooting into my sister, seeing her cummy panties in the laundry, and the wet spot on their bed the next morning. And Marg, the slut, was still occasionally fucking other men. And I had nothing, just my fingers, and my dream.
I saw them fuck once. I came home late and they did not hear me because they were at it. On my bed. I could see his lovely cock sliding into my sisters cunt, glistening with her wetness. He started really thrusting into her, but the bitch would not let him cum in her, she said it was the dangerous time of the month. He pulled out, the darling, and shot his cum on her stomach. It was my bed, why wasn't it me there? I would have taken his sperm into me. Into my womb. All the lovely sperm on her stomach when it could have been inside me. I would have welcomed his baby. Margaret saw me and giggled, he was very embarrassed and almost ran back to her room. No shame my sister, she lay there legs apart, her cunt was wide open from his cock, covered in cum from her pussy to her face. It should have been no big deal, just sex. I had sex on her bed before, she had seen me fuck my ex, she has seen my ex's cum on me. But she did not know I had the hots for her man.
She wanted to chat about my night out with the girls, which of us had scored. I said I was tired and had to go to bed, I got undressed and flopped down. But she just slid over to make room. I she seemed was quite proud of what she had done, and of her cummy body. It was a spectacular load, I could even see some flecks in her hair. I knew she was on the pill, and I asked her why she did not let him cum inside her. She wanted to see how excited he was for her. Then she reach across and kissed me good night. And got some of the cum on me, she touched it and told me it won't hurt.