Christmas related flounce

[Onmyownwith4kids]

I'm trying so hard to be reasonable but it always ends in him flouncing off. Ex husband now living with woman he had affair with wants to spend night at my house Christmas Eve and have Christmas morning with kids. Last Christmas he did but that was when he was supposedly no longer with ow and would do anything to make marriage work. He actually went straight from us to her where they discussed how resilient my kids would be to divorce. I feel they're a couple now. I have the right to Christmas without him in my house and he can take them out. He says I'm being selfish and kids have right to mum and dad in own home. Surely they need to see we are no longer a family

The transfer of equity is taking ages. He has to sign things and paranoid he will make it difficult. I find it so hard though. When he's not around I feel great. Work's good, kids doing well. Really good friends. Having him around makes me feel sick. I loathe him he's constantly bemoaning lack of money but spent hundreds on the kids which I can't compete with. He won't help put stockings together or put any of his presents in there. Presumably because he wants the glory. While I'm left looking after children day in day out he's bought a dog that has become their baby complete with dog Xmas jumper and advent calendar. I just want him
Gone so I don't feel my face is being rubbed in it all the time

Regarding the stockings, I'd just reply "you chose to leave" every single time the subject came up.
and something like "Tough, isn't it?"

And that he can see them opening their stockings when he has them at his place for Christmas.