our youngest and most angry child, d19, has h's old cell phone. The fool did not wipe his texts clean. Several texts are blasting me or lying to me (and some inappropriate ones to other women he works with that are, at best, way too flirtatious).
But h blasts d19 in some of his texts.
MHO is to stay out of the middle of your childrens relationship with their father. That is for him and them to work out and should have nothing to do with YOU. They are certainly old enough to fend for themselves as far as that goes.
My ex destroyed her relationship with my son. Left him on the side of the road about 6 years ago, he was around 23 at the time and drove off to another state. That did not go over too well with him. They are slowly mending their relationship now and at least he will talk to her now. Not sure he will ever trust her though.