Originally Posted by
Serpentine
I've heard the angle of "girls who are sexually active* are sluts" far more often than "it's unfair that the guy has to be the one to kiss the girl". Culture gap has nothing to do with it, unless you'd care to grant that guys having to initiate kisses is also subject to that gap.
*by which I don't just mean "having sex", but "will seek out or initiate sexual-type activities"