Stepsis Asks for a Rough Anal.not From Her Boyfriend

Is she teasing me all the time, or is it just my imagination? I know she has a boyfriend, but her fit ass just drives me crazy. I'm trying to convince her, and when it seems like it's working, but eventually she gets off the hook. Maybe she's scared because she's never had anal. But I know what to do! I will be more persistent, and despite her discontent, she will soon be asking for it more harder and more deeper.