It was hurtful and hits on an insecurity and no reason OP should have gotten that defensive. It would have been far calmer to stick with how she's friends with her exes and ask how it's different. Let people die on their hypocrisy or see the error of their ways. Getting nasty won't help a relationship.

I'm guessing she realized she was being petty pretty quick too.

Some of y'all are so quick with anger and revenge. o.O