I’d not worry what he tells his friend. I’d be concerned if these are mutual friends or coworkers or people you need to associate with. Then it’s a problem.

If it’s someone he confides in (even if his perspective is completely incorrect) on a personal level, he kind of has rights to do so. Not defending him but we all biatch and vent to our best friends and family members about things that bother us, right or wrong. He could vent.

It’s not going to look good if you contact his friend. Like if a friend told me her husband is a jerk, but then that husband read our texts and contacted me saying he has evidence that he’s not a jerk but she is. I’d probably laugh and block him. Like there’s no need to do that.

Don’t worry what he does or says