I'm really trying my best to make my Dad to leave my step-mother. My step-mother and I never got along from the beginning, she's a very dissimulated person and it seems only my Dad doesn't see it, maybe because she pays all his bills, but none of us are happy. I'm having sex with my Dad since a year ago, that's my way I punish my step-mother. Well, she doesn't know it now, but she will soon or later.