Peeping in on Your Taboo Step-Sister

You've come to visit your step-sister and late one night you hear an argument coming from her step-son's room. Your curiosity gets the better of you and you hear me talking to my step-son about how we can't keep fucking. It's wrong, it's taboo. But it turns you on, doesn't it? Watching my step-son convince me to fuck him again, watching me take my clothes off to give him my body, awakens the voyeur in you. Watching your step-sister get fucked by her step-son makes you hard. It makes you so hard that you come back the next night to watch it all over again. You had no idea how taboo I was, did you? Maybe you had no idea how much your step-sister would turn you on. Just promise you won't tell anyone that you saw me get fucked by my stepson!