You just got a case of the dreaded "one-itis" my friend; investing too much thought and energy into just one girl is one huge, major disappointment waiting to happen. Spread that out among more girls and you'll have more of a chance at sucess. Believe me when I say that it is wayyyyy too easy to fall head-over-heels for someone who you'd imagine to be perfect and all ways imagineable...sometimes without REALLY knowing who they are...and when this happens, it's hard to remember that there are better, single girls out there (blue balls is a major contributor to this diversion). So in conclusion, meet more girls. It'll make you feel better...PLUS, if your current object of affection sees you macking it up with other girls, she'll be more likely to be attracted to you, dump her bf, and chase after you (us humans always want what we can't have )
cheers
~007~