My stepson is coming home from university after a while. The backstory is stepmom already has sex with her stepson. stepDad knows. I it is not "taboo" in our family, nothing strange or abnormal, stepmom is essentially stepsons "Girlfriend". That type of relationship. I'm not just "mom", I'm his "mommy". Both of us caress each other, he put his hands under my dress & up my skirt, fingers in my mouth not a problem! I talk about how he spent his time if he got a chance to watch all the vids & pics I sent him & if he only came on pictures of mommy. Over the course of the scene, I get more & more suspicious my stepson is cheating on me with another girl, he’s not calling me mommy, the smell of his cock is different, the taste is off. It's no longer just mom’s pussy, where his cum belongs!