Ever since I convinced my sweet simple stepsister Lily that I need sex regularly she has become very accommodating. Now that I know how open she is about sex I can't stop thinking about how available she is to me. Just thinking about it makes my dick hard and I go up to her room. All I need to do is pull the covers off of her and when she sees my hard dick straining against my shorts she is more than happy to give me what I need.