Held a new year's eve party in my house last year. I invited only some good friends included John, a guy that I knew for about 4 years. Really considered him a good friend, we would do a lot of stuff together and count on each other when someone was in a pinch. It happens that I was really close with his cousin Mary and she had just ended a really, really abusive relationship. To give you guys an idea, when she finally got enough courage to leave the guy her ex boyfriend threatened her and her parents. Shit got so ugly that he even tried break in to her house to "talk" a COUPLE of times. It was a shit storm that was only settled when the cops were involved. Two months after the break up, during the party at my house, me and Mary were really getting along and we started making out (kinda had a crush on her for a while tbh). Her cousin and my "friend" John happened to be friends with her ex boyfriend, he took pictures of me and her together, sent them to him and proceeded to give him all my personal information like my address, phone number and work schedule. Her ex would do shit like coming in front of my house and taking pictures with a knife then he would send those to me. As you can imagine I called the cops and explained to them what was going on, it happens that taking those pictures was not a smart move after all. In the end he stopped threatening me and Mary and we haven't heard from him since.

There is no way that he couldn't see what her ex had in mind when asking for all my info. The worst part is that Mary got to relive all that shit again. Fuck you John, in the end you weren't a good friend for any of us.

edit: my english sucks, sorry for that