While I'm not saying this is definitely the case, some guys feel like they should be asked out by the girls. This often leaves most of them alone for a long time, but it's not always up to the guy to make this move.
I am also the guy who asked #15 out. I wanted my first girlfriend to ask me out instead of the other way around, but I swallowed my ideal and took the important step after she gave me an all-important kiss on the cheek. So hey, if you think a guy might be waiting for YOU to make a move... make a very attractive move that can't be misinterpreted yet doesn't go all the way to asking him out. Being too shy doesn't exactly hook people up very well, afterall.