I want to bring up something that I know embarrasses my girlfriend.
Why do you want to bring it up?
I'm going to mention a conversation she had with a guy a few weeks ago.
It's not nice to try and embarrass your girlfriend. You need to learn to be more supportive of her.
But I think it's funny when she gets upset and embarrassed.
Put yourself in her shoes, would you want her bringing up something that embarrassed you just for her own entertainment? Being supportive of your girlfriend and her emotions is really important in a long term relationship