1 That you think his ex girlfriend is a total bitch.
Your boyfriend’s ex is probably a poor excuse for a human—a raging cunt with bad breath and regrettable taste in clothing. But as obvious as it is that she sucks, it would be a mistake to reveal how you feel about her to your boyfriend. Any negative comment about a man’s ex, however accurate, is bound to be construed as jealousy or pettiness. So talk shit all you want among friends, but don’t divulge the extent to which you loathe your man’s former flame when he’s around.