Cheating with step-Sister-in-Law BOY/GIRL

You hear a knock at the door and your step-sister-in-law in standing at the door with her bags in hand. This isn't the first time she's showed up like this, having been kicked out.. AGAIN. What did she do this time? She promises she just needs a place to crash for a while. She makes you help with her things and goes into the spare room. You hear some weird noises coming from the room and when you walk down the hallway you see her, naked, trying on your girlfriends lingerie. You can't believe what you're seeing... she went through her step-sisters things and went as far as to take her panties! You watch her for a while, her body is actually really nice.. you've never really noticed before but you can feel yourself getting hard. You go into the room and she is shocked to see you. She tries to explain but you have an even better idea. She is TERRIFIED of her step-sister. She knows she doesn't want her touching her things. You threaten you're going to tell, and that this WHOLE thing was a bad idea. She needs to leave... unless..... You ask her to get on her knees and take your cock out. She knows she has to do this, or else she won't have anywhere to stay. She slowly starts sucking your cock, playing with your precum. Your cock is so big, she can barely fit it in her mouth. You get her on the bed, and ask to see her huge tits. You've always wanted to see what they look like.. not that she did a great job covering them up before. She asks if they're nicer than her step-sisters? She wants to know if you like her body better.. she's already so wet. You slide your cock in her slit while her eyes roll into the back of her head. You roll her over and fuck her from behind until you cant take it anymore and cum all over your step-sister-in-laws pretty little face. She admits how much she loved your cock, and promises if you let her stay.. think about all the fun you two can have while her step-sister isn't home XO

tags: taboo, boy/girl, BG, step-sister-in-law, step-sisters, POV, blowjobs, precum, uncut dicks, cheating, cheating fantasy, facials, cumshots, upskirt, eye contact, Harley Sin, Jack Sin