I've never liked the "hard to get" thing. I fuckin HATE mind games in general, and playing hard to get is really the king of all the mind games.
Quit playing coy. You play coy in sarcasm if you want to, but only after you're already IN the relationship. This business of acting like you're not interested when you ARE interested is asinine and only screws people up.
PLEASE- LADIES- (and I guess guys too, although the guys don't matter to me, lol) STOP with the hard-to-get! There are other ways of making guys earn your affections, but acting like you don't care they exist only deflates egos, and for some people, this can be devastating.
Just smile. Give us a hint. Something. Thanks!