ok dude i was in the same boat and told the girl that i liked her i have been really close to this girl sine i was a freshmen and liked her then i am pretty sure that she knew it but i just left it alone i was a nerd and she wasnt ha. so i left it alone and finally told her how i felt about six months ago and then just left it at that i still talk to her all the time and she doesnt mind at all and we still hang out all the time just like before but she has a bf and did then so give it a try man. but tell her dont try to make a move that may freak her out