Stepsister Blackmail Part 2

It's one thing to get blackmailed into fucking your step brother but it's a whole different ball game when your boyfriend calls you while you're getting the hell fucked out of you! It's not always easy to stay quiet and act normal while your having multiple orgasms. As soon as I convinced my boyfriend that I was alone at the house and would never cheat on him my step brother decided to stick his big cock right into my asshole! After that i'm not sure exactly what happened, all I know is that I'm full of cum and I am in deep deep trouble this time.