I thought girls liked tall guys! I'm only 6"0', but I'm supposed to grow to like
6"3' or even 6"4' like you in the next year (doctor told me)!
It has to be for another reason, like your personality (doesn't sound like that's the problem, but whateva) or most likely that you're not outgoing enough. Keep asking girls to go out with you! One of them (or more
) MUST find you attractive! You just have to ask them out before you become GREAT friends or they'll only want to be "just friends" (I've felt the same way towards some girls).