Is it possible to go from infatuation to normal attraction?

There is this girl I've been totally infatuated with for a few months now, to the point of it distracting me all day and affecting my life, but I think she has a boyfriend and I've been too shy to talk to her anyways. I don't see how I can just get over her, but is there some way I can stop obsessing so much and just like her as an ordinary person so I can wait for an opportunity to ask her out without it ruining my life until then???