Nice guy

A nice guy is anybody who believes that if one person shows another person of the opposite gender any small gesture of niceness, the first person is absolutely interested romantically/sexually and both persons absolutely should date/smash.

This can go both ways: a nice guy buying a girl flowers and so now she owes him sex; or a girl touching a nice guy's arm and that means she's in love with him.

Nice guy: I guess being nice and being myself is a curse for girls.
Girl: It's probably the whining on FaceBook and the "I'm nice so fuck me" attitude, actually.