To the brink of Divorce

[ACJ]

Mow I know you have kids I will put you in the picture. 2 days ago h came to see kids for the first time in a week. After we had eaten he sat down to talk to D10 (youngest of 3) she was sulking so he asked her what was up. she said everything. He tried to make light of it but didn't succeed. To cut a long story short he ended up asking her if she was 10 or 11 now!!!!!!!! She said nothing at first and for a few mins H went out of the room. When he came back he asked again what was wrong and this time she let him have it. She said he didn't care about them all he was interested in was his OW (since she moved to London 3 weeks ago my kids have seen him for about 2hrs a week as he has spent all weekends and all bank holidays with her and it is 300 miles away!), she said he spends all his time with OW. H kept trying to interject that this wasn't true but then came the piece de resistance! She said you don't even know how old your own kids are now and then ran out of the room sobbing. I was ironing in the same room at the time and kept quiet while all this was going on. Expecting H to run after her I stayed still for a couple of mins. He then said right I'm going now and off he went. I went looking for D10 expecting to find H with her but sure enough he was getting into his car. I went and asked him if that was how he was going to leave it with her. I didn't catch everything he said just something about 14yrs. that was clearly aimed at me as she is only 10! Then he drove away.
When h first left he was a model dad. He was originally with a 22yr old but is now with a 25yr old. Since moving onto this 2nd OW his R with the kids has gone steadily downhill. My girls are now saying that they don't really want to see him, my son had not said how he feels. I've told them they have to tell thier dad this themselves as otherwise he will think I am stopping them from seeing them. What I want to know is if this is normal behaviour for a MLCer or is he just being a total jerk?
thanks for your help