His hurtful words

Maybe I wasn't the greatest wife.  I admit that and I admitted to many mistakes I made in our mariage.  I'm over what he thinks of me as a wife.  But today he sent a letter to our kids trying to convince them that I wasn't the greatest mom either and that I am manipulating them into leaving him out of their lives.  They are 19 and 20 - young adults with very strong minds of their own. I know this is not the truth and our kids know this is not the truth but it hurts all the same.  He's got his whole family believing this as the truth and I shouldn't give a flying f$#k but I do.   I had to stop my son from going over and trying to kick his dad's ass for this letter.  I'm afraid of what would have happened so I stopped him from having a face to face confrontation.   This letter, and it was long and detailed about why he left me, how I had "drastically changed" and I was blah, blah, blah, had the exact opposite affect than what he thought it would.  He was hoping the kids would be blinded by the "real" truth when they've been living the real truth all along.   All this letter did was make them even more angry at him for hurting me. It's never over.  Even after the divorce is final he still has the ability to put a knife right through my heart.