Well, I'm no proffesinal (Oo, ouch, you can really tell by the spelling. lol) but I am a female, so I'll give a try at it...
AliasHombre, you said she might have a boyfriend, right? Well, keep that in mind, don't drown yourself in worryed thoughts about it, just keep it in the back of your mind when your with her. So you don't make a fool outa yourself. When/if you get enough curage to "meet" her, and she bluntly says she has a boyfriend, just laugh. Not a "AHAHAHHAAHAHA!!!!!!!!" but just sort of a.... gulity, quiet laugh.. I don't know how to describe it... But if you just sulk away she'll think your a jurk, and if you laugh REALLY loud you'll get the same reaction.
Did that help any? Or even make sense?