It was my first dance and she told me "Remember to ask some of the fat or ugly girls to dance to make their night"  I find her behavior very telling.  That line alone just screams that she's a scumbag even without your post where she assaulted you.   I never considered that neither of them would dance with anyone.  This is why, in a sane world, they'd be banned from all BDSM, swinging and polyamory events.  They aren't going to get laid anyway, they'll just chase away the fuckable people and stand around awkwardly eating food.  Fats at swinging events make it a nude potluck with no sex.