I had a "friend" who could not stand any other woman to have male attention when she was there. While if there were no other women there, she'd argue with men, if there was one other woman there, she'd immediately take his side in any argument against said woman. She once told a guy we were both having a conversation with that brown eyes (which I have) are ugly.

She wasn't as bad as Anita though, because no one is ever as bad as Anita.