I disagree. In my case, at least, the things that have attracted me to my crush(Moluku) are things I haven't had to meet her to discover. i.e. Her intelligence, kindness, warped sense of humor, close relationship with God, etc.
My father has always said he knew he would marry my mother the moment he saw her once in church. Most of the people I know who have gotten crushes did so with someoen they'd seen very rarely/not at all and spoken to very little/not at all. Sometimes, as in the case of my parents, it develops into something more as they get to know eachother and sometimes it doesn't. At least I can say mine had developed after I've gotten to know the person.
We're now attempting to find out whether it will lead to something more or not. If it starts to then a physical meeting will most likely be arranged. There's certainly very little danger of one or the other of us declaring our undying love for the other before then.
And now back to the fun, merely half-serious thread this was before it almost started to degenerate into real discussion!