this question is too vague. asking a question like this probably means you don't even know who the hell you're liking right now (or what sort of men you're interested in) because you don't know how you need to act in order to even just grab his attention.
& if you need to act in order to get the guy that you like, then he doesn't even like the real you. so why bother? just wait for guys to come chase you. don't be cheap about yourself