Family roleplay with step-sister helping me with my blue balls

I've been feeling a bit down lately, what with my family being so dysfunctional. My father's new wife, who I'm not exactly thrilled about, has been trying to mend things between us. She's been dropping hints about wanting to be more than just my step-sister, but I've been too hesitant to take it any further. Until recently, that is. After another heated argument with my dad, she stormed out, leaving me alone in the house with her. I couldn't resist the urge to make the first move, and she didn't seem to mind. What started as a innocent kiss turned into a full-blown fuck fest, with her riding me like a wild horse. It was a taboo family porn that I never thought I'd experience, but damn, it was worth it.