I haven't seen many instances of females every actually crying, Cootie, and to be honest most of those were while I was in the city on short occasions. The ones that have cried around here were because of genuine distress; the instances I can list off the top of my head include their friends dying, their pets dying, that sort of sympathetic jazz.
I did, however, go into the city a few times and few women crying on the bus because of them being cheated on, missing out on a date, having someone say mean things to them on Facebook. A lot of cases of girls crying on buses. I don't know.
It was weird. It's definitely just a social upbringing, but its very localized. Girls don't seem to be naturally more sensitive or any of that bullshit, city-slicker upbringings just expect them to cry more.