re: what are some circumstances that have ruined long term friendships?

This was soon after I graduated high school. A friend of mine liked this girl I was good friends with. While I was friends with this guy, he kind of sucked, but this was a bitch move by me.

One night he had come over and we were in my room. The girl had called me while he was there and right after she called he told me he was leaving. Dude couldn't have played it any better, but as he was leaving he asked me if I wanted him to turn of the light and I said yes. I was looking the other way playing attention to the conversation I was having with the girl. He opened the door then closed it like he left, but he really kneeled down on side of this table I had by the door.

Me and this girl talked for over an hour.. Maybe 1.5 hrs+, that's what was impressive about this. In the middle of the conversation she was like "so what's the deal with ______________? He asked me on a date a few days ago and I told him it was a bad time. He asked for a rain check and I told him sure". I went on saying "____________ is alright, but he is the type of dude who thinks he is a lot cooler than he is. He doesn't know it, but he always says and does corny shite and everyone kind of laughs at him behind his back, but he lies a lot about hooking up with different girls, blah blah blah blah so he kind of brings it upon himself".

There was more to the conversation than that, but after that we started talking about some personal shite, things that you don't just tell everyone. She was telling me things, I told her certain things.. From the things I was saying, it wasn't hard to figure out what she was telling me. Anyway, as soon as we finished talking & hung up the phone, that motherfricker turns on the light... It was like. All of a sudden the light comes on, I turn and see him there and he says "well I guess I know what you really think of me and frick you. I heard it all" then walked out.

That ended that friendship.