I agree that I think the guy is probably confused as well. When you say this is a guy you've been attracted to for years, how long are we talking? It could be a situation where he looks at you as "just a friend" if it's been a real long time. That doesn't mean that he hasn't had thoughts about being with you or that he wouldn't want to be with you now. It actually sounds to me as if he may have been contemplating recently if he indeed wants to see you and figured that by telling you he didn't want to just use you for sex that you would get a deeper respect for him. Sounds stupid I know but sometimes we guys can fuck ourselves over by trying to figure out what sounds most desirable to a lady. We are rarely correct in what we think is right. Well, at least that's what I've found to be my case over the years.

As for giving off the "nice girl" vibe, I'm sort of opposite of the norm I guess because I find that to be an incredible turn on. I'd bet that what osuche said in the last paragraph of her response could be right on the money.

And you know what, it's never a bad thing to be nice. Sometimes there's a time where niceness isn't the most desired quality but I honestly can't think of a situation where at least a little of it doesn't help things out. I don't know that I'd try to make any huge makeover to your personality based upon this one guy. Hopefully you weren't considering doing so.

Hang in there, he'll probably come to his senses soon.