A guy and a girl can be just friends, but at one point or another, they will fall for each other. Maybe temporarily, maybe at the wrong time, maybe too late, or maybe forever, amirite?

Or one falls for the other and the other does not.

That would be "at the wrong time".

And occasionally, one ends up sitting there while the other tells her about all the girls he likes...

did you get this from "500 days of summer"? if so, cite it

this happened to me xD we've been dating 6 months.. i'm counting on forever ♥