so i caught my step-sister cheating a couple days ago and filmed it. since then ive been blackmailing her for sexual favors, iv gotten her to jerk me off and suck me dry. today im going all in, i want sex from my step-sister. my parents will be home tomorrow and i promised my step-sister if she did what i said until then then i would delete the video. so today i told my step-sister i wanted sex and she didn't even argue, she striped and dropped to her knees. a little later my step-sister was bouncing up and down on my dick when her phone rang. she picked it up and i asked her who it was. sh... Show more