My ex and I were still friends when we we're having sex on a consistent basis still. He was so mad when I told him I had sex with one other guy after we broke up. He was dead set that he has only had sex with me. But I logged out of my Facebook and he had his login on there so I logged on and there was all sorts of messages on there to girls and even videos and pictures on both sides of them naked! Also messages to his best friend about how his ex was coming over. He doesn't know I have his Facebook login.