You're having a birthday party for your two year old child.
You've invited several children from the playgroup you belong to and their parents.
You've also invited family, framily and friends.
One of your girlfriends arrive with a guy you've never met.
Nor heard of.
She introduces you.
You look over and see your best girlfriend talking to them.
She walks away with her jaw tight.
But she doesn't say anything.
Later that night while you're cleaning up you ask your best girlfriend what the problem was earlier.
Your best girlfriend tells you that she didn't say anything but she was shocked that the friend thought it was appropriate to bring a guy she'd just met the night before to your child's birthday party. She also says that she notices this friend does shit like this all the time and is a habitual line stepper and she's pretty much sick of her.
Your husband walks in as she's saying this and agrees wholeheartedly.
Would you say something to the friend?