It's about two am. Like most nights, I stood in my bedroom doorway and watched my twin brother's friend, Jason, whom I have a secret crush on, masturbate in the bathroom. The door was half opened and I could see his cute naked butt making small bucking movements as he stroked himself. I wish I could see what his cock looked like but the bathroom counter was in the way. All I saw was his arm moving up and down. I watched and wondered what he was thinking about when he jerked himself off.