rdos wrote:
It certainly is an AS trait, but that doesn't mean you can't do anything about it. The best thing to do is to make sure there is mutual interest before you get a crush or similar feelings. I think that is quite possible to do, both for a guy and a girl.
^ This.
I used to fixate in a similar sort of fashion in high school, but too many instances of rejection (and only rejection) left a very bitter taste in my mouth. Now when I'm interested in someone, I just acknowledge it, and realise that it's highly likely my feelings aren't reciprocated. Unless of course I have evidence to suggest otherwise, but that's never happened outside of an online setting.