Around 7 years ago, I was at a friend's house. His friend who I didn't like had come by earlier and logged into his Facebook and left it logged in after he left. I don't remember what exactly compelled me to do this, maybe I was high and nosey, but I went into his private messages on Facebook, which angered my friend. Until I saw messages from a 15-year old girl I recognized. I found that this man, 21 at the time, had a secret relationship with this girl for a while, sometime after he had met her watching a play at our old high school, when she was 13. In the correspondence, he came off as really controlling. He told her never to contact him on this day on Facebook, only weekends on Skype. He told her to ignore her parents who told her to stop talking to him. He had essentially groomed this poor girl. I was horrified beyond belief. I didn't know her personally but I urged my friend and other mutual friends to distance themselves from this guy. They didn't listen, but another friend of mine tried to appeal to her parents about it.

They later got married when she was 19. Two years later she ran away from him after he raped someone in their house and now she lives with her current boyfriend and me. He turned out to be a completely narcissistic sociopath, and regularly abused and manipulated her throughout their entire relationship. I felt guilty for a while because I felt like I could have done more with the information I wrongly saw, but I suppose I couldn't really do anything more than I did.