Ugh, I WAS friends with a "nice guy" for 3 years.
He originally dated my best friend. We were cool, then she got bored with him and his inactivity and cheated on him. I felt kind of bad for him and he seemed like a nice person so I stayed friends with him. We were pretty close over three years but all of a sudden started acting really hostile, distant, sarcastic and mean towards me. I find out through a mutual friend that he fell for some new girl (after not being involved with anyone since my best friend, minus a few ONS's)
It was brought to my attention that it turns out this whole time since my best friend and him parted he transferred his crush to me. We were never really friends, he was just in love with me. And he would talk mad shit about how "horrible" my boyfriend was and how much better he would treat me. My boyfriend and I's relationship isn't perfect (he's a recovering alcoholic and when he would relapse he would get pretty bad, emotionally abuse) but he has doing a lot better for the past 2 years with less than 5 slip ups since March of 2013. The thing is, the "nice guy" friend is hardcore into the whole crust punk thing, so he doesn't work, doesn't bathe, and has a pretty apathetic attitude towards most "normal" things. So if I WOULD have dated him I would have gotten told what to do all the time (like he did to my best friend) and I would have had to financially support him because he refuses to work. So he isn't exactly the knight in shinning armor like he thinks of himself. I'll take my boyfriend who struggles with alcholism but holds a full time job and tries to do what he can for us to have a successful life that I have emotional/sexual chemistry with over some apathetic crust punk that doesn't have a drinking problem.
But yeah, we blew up on each other a few times and now don't talk. Now he follows around some woman who is in a bad marriage and has three kids. Apparently he has shifted his hatred from my boyfriend to her husband. Same story different people.