I have a guy who wants me.. but at the same time he can get with as many girls as he wants so I'm not going to just put myself out there... how can I play hard to get??

Don't start a relationship by playing games. It only ends in disaster.

Game playing is childish and often backfires.
You either want the guy or you don't. Use your head in this situation, not games.

I hate that about people sometimes, I say people because lets face it, guys do it too. It's rather annoying, why can't people just be themselves instead of playing silly games. Unless you're after a silly one night stand, because that's all games get you.