There will always be mean girls...
Have you ever known a mean girl? I've met my share.. Guess what? Mean girls grow up to be mean women... There are mean boys and men too... Mean people use nice people as scapegoats... If they do something, they blame it on you... Touche!
If you're a nice person then you have to be smart and not let the mean people get their way... Don't let a mean person screw around with your head...
I remember a coworker telling me that she and a guy put up a personal ad for a guy they didn't like... He was straight but the ad they put up for him was for gay men... Not nice!
But you reap what you sow... And the mean people in this world will get their due someday...