Recently I had a friend meet a new guy. They were hot and heavy for a short time, but decided after a while that they'd just be friends. Well - as I could have told her - he avoids her - doesn't return her calls, emails. I told her that the reason was he was a jerk...got what he wanted and then cut her loose. I'm just curious...why do guys do this? Lord knows it's happened to a lot of women.... Opinions please?