It's summertime and that means I get to see my hot younger step-sister Lo laying out in her new bikinis by the pool. Today she was in a sexy blue two-piece bikini chillin in her favorite chair soaking up the sun. Ever since we began fooling around behind our parents ' backs, we've been playing the game of is she just tempting me, or will I actually get to fuck her that day?!! I can't help myself but to still pick on her like my younger step-sister. Every chance I get I'm giving her a hard time about her Boyfriend or finding a way to get under her skin. The more I do this the crazier the sex becomes so I lay it on thick sometimes. The problem with that is that sometimes it backfires, and she likes to get revenge on me by double down on teasing and denying me. Today my friend Steve was dropping by the house to hang out by the pool and little did I know she had her eye on Steve and plans of her own...