Here's a question, if you're really in love with a girl, and convinced she is one of a kind, would you really just want to sit around and wait for her to express interest? Are you really THAT willing to allow another guy to come along and snatch her up? Rejection is an unavoidable fact of life, sitting there and waiting for a girl to make her move is not going to keep it out. Buck up, be a man, tell her you're interested and if she's not, who cares? Either be insistent until she at least gives you a chance or find another girl, there are only a few million more on the planet.