I would have to say yes.... Because the guy 老友记 that I have, i'll admit that I have liked them at some point. I think it's just because we already know them and feel like we trust them in a way that 你 don't often feel with anyone else.
I don't think every time, but yea it can. I've been in 爱情 with my best guy friend for years now. I don't talk to him much anymore though. It hurts too much to be around him. Even though I've known him for about 8 years now. I never told him. I know I should've though.
I think it happens, but not often. When i first went to my school i met a really nice guy there but im not sure we were ever really just 老友记 cos we were prettymuch crazy sabout eachother from the first 小时 XD True, that. its probably why it never worked out cos we rushed into it due to the fact he had to leave in a few months.