It's late at night and because my husband isn't home, my step-sister comes to visit with my step-nephew. But isn't an ordinary visit. They came all the way here to have sex. Since I couldn't convince my step-son yet, I had to start having sex with my step-nephew who was really excited when he heard about me and my step-sister swapping step-sons. The sex becomes crazy and we all have sex in the same bed and we get so hot that me and my step-sister end up being filled with sperm and eventually impregnated. This sex session might have convinced my step-son to finally accept my offer. Is just sex, isn't it