blackmailed by your gf's step sister

Description: In this taboo roleplay custom, we just got back from an event and your girlfriend was busy so you took her little step-sister instead. when we get home, i tell you what a great time i had then start asking you about your relationship with my step-sister. i aggressively ask you very personal questions about your sex life, comparing myself to her. i tell you how much better i am than her, i'm younger and hotter and i give really good head. you're reluctant and dismissive, but if you don't play along with me, i'm going to tell your girlfriend that you fucked her innocent little step-sister. who do you think she'll believe? i start sucking your cock, telling you how much bigger you are than the guys in my school. you cum really fast and i swallow all of it for you. i guess i must be better at giving head than my step-sister! you stay hard and i tell you how all the guys i usually give blowjobs too get soft right away. so that must mean you wanna fuck me, right? you try to deny it, but we both know you want me. i always get what i want and today is not going to be any different. i lay back and struggle to fit your huge cock in my tight pussy. i'm determined to make it fit and once it's in, you fuck me soft and sweet while i dirty talk relentlessly about how i'm better than your girlfriend, you're better than the pathetic guys i usually fuck, and how younger pussy is so much better. you start to fuck me faster and harder and then i get on top. i love being in control of you. i ride you hard and i can tell you're about to cum so i demand you cum inside me. you aren't so sure but i tell you it's gonna be okay. you want to cum inside me, i know you do. don't worry, i'll keep your secrets, just as long as you keep coming back for more!