[header] How to spot a player [title] Watch out for over-confidence. [step] Healthy self-confidence is great, but there's a difference between being confident and being cocky. If you think this guy seems a little too confident in his efforts to win you over, it could be because he's had plenty of practice. 
[substeps] Most people become at least a little nervous around people they're attracted to. A confident guy isn't necessarily a player, but if he doesn't break a sweat while asking you out or seems rather aloof about the whole deal, he might not be that serious about you.