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I never planned on my step-Son walking in on me having sex with some stranger. I met him on a website called 'Taboo Encounters' where like-minded people into the family sex fantasy can talk about their darkest desires in private chats.. I even gave my step-Son money to go out and not be home till midnight.. lied about hanging out with the girls but NOPE.. he decides to walk right on in at 10.30pm right when I'm in the middle of a taboo role-play session with my toyboy and I'm playing his step-MOMMY! God only knows what my step-Son must have thought in that moment.. all I know is that it turned me on, him catching me like that with my breasts out. My step-Son now knows my twisted taboo fantasy and so when he tries to understand me more I open up to him.. tell him all about the website and that I got a secret kink for "pretend" family sex.. but my step-Son grows jealous of my relationship with the guy from the website.. I don't think he can handle his step-Mommy being a rotten taboo pervert behind his back anymore.. I think my step-Son WANTS me.. just like I want him.. just like I've always fucking wanted him...