Dear Steve and Shirley, I am the baby girl of two older sisters. My oldest sister lives in a gated community and she's a housewife, but she's not too bright. She's just a rich and a pretty homebody whose husband has been cheating on her for a long time. I felt bad about it for years, but now I feel worse because I have a secret that I can no longer keep. My middle sister is having sex with my brother in law, and I saw it for myself. I stayed over at their house to babysit for them while they had a Christmas party at the house. My nephew and I were upstairs in his room playing a video game, and I heard a lot of banging on the bathroom wall closest to his room....................................................