I don't like when people throw their significant other under the bus (as in your example) to me its a respect thing. Its one thing to have an argument etc with person you are in a relationship with, it is another to try and embarrass them for "points" in front of your friends.
If I was that guy I probably would have pulled some up on my phone right then lol
🤣 I wish he would have! They're actually not together anymore and I'm not curious enough to ask why.