My step-son is coming home from university after a long time. The backstory is step-mom already has sex with her step-son. Step-Dad knows his step-son is step-moms fuck friend, nothing new. I am open about this relationship and it is not "taboo" in my family. Step-mom is giving her 110% in everything. Seduction, and blowjob. Letting my step-son do this in public, at home in front of people is not strange or abnormal, step-mom is essentially step-sons "Girlfriend", mistress or essentially married to me. That type of relationship. I'm not just "step-mom", I'm his "step-mommy". Both of us caress each other, he put his hands under my dress and up my skirt, fingers in my mouth not a problem! I invite him over, exchange pleasantries and set the scene up. Sip some wine, exciting catching up! Inevitably transitions to BJ and sex. I talk about how he spent his time if he got a chance to watch all the videos and pictures I sent over if he only came on pictures of step-mommy. All the boys she’s had sex with, all the cum walks in public etc. Over the course of the scene, I will get more and more suspicious my step-son is cheating on me with another girl, he’s not calling me step-mommy, the smell of his cock is different, the taste is off. It's no longer just step-mom’s pussy. My step-son, the boy I raised has been having sex with other girls. This is a slow progression of the suspicion, I start telling my husband he’s cheating on me via phone call, but eventual forgiveness for him not to do it again and that step-mom’s the only girl for him and the only place his cum gets to go is inside me or on my face. I then lay down on my back so he could start fucking me. Then moving on to cowgirl. Lots of dirty talk and step-mommy talk. Tits on your face. Then back on my knees where I will let him cum in my mouth, taking my territory, I will spit it out and smear it over my face to remind my step-son that this is where his cum belongs!
