I mean, what signals do you give to show a guy you want him to approach you? Repeated glances, smile, close proximity...etc? And how to know the difference between "I find you interesting but don't want to talk to you" and "please, come talk to me"?
How do/don't you want to him to approach you?
Do you also find guys' "signs of interest" confusing sometimes?
I misinterpreted signals in the past, and I know many of my friend (males and females) did too.