Is it bad to flirt with many guys even when you are interested in just one?

I'm a single girl and I find myself being playful and teasing with guys in college :P is this a bad thing? I naturally have this personality and I find it fun to tease guys (And not in a sexual way. Maybe I'll throw in a few innuendos but I joke around haha and they know that).
But I am genuinely interested in one guy and I've been flirting with him and playing hard to get at the same time. Is this a good method or do most guys find this annoying when girls do it? He knows I'm interested and he even flirts back but he won't make a move!
Is it bad to flirt with many guys even when you are interested in just one?
Post Opinion