Just caught up with the latest developments. Bless you WUW, what a horrible man.
Please stay strong and resolute. PTM is welcome to his new life, with his "lovely" new "lady" - in his new home; let's call it Disgracelands. They can both rot there. At some point, perhaps when the novelty wears off; perhaps when she accidently throws the purple trousers in the same wash as her white M&S tummy control Bridget Jones knickers, reality will kick in. Her husband will probably, if he is a merchant banker, take her to the cleaners. She will lose her status as wife of merchant banker and all that goes with it. But hey, never mind because she has your cast-off. And what a prize he is, isn't he? A manipulative, lying, controlling cheat, who will use his daughter as a pawn in his silly sad game. They deserve each other.
You have more than either of them will ever, ever have. You have love in your heart, empathy, warmth and the true love of your kids. You are selfless and giving, and we all know that the more you give, the more you get back. So already, you have more than he will ever have. You can look at yourself in the mirror every morning and feel proud - and so you should. He can't - she can't.
Please try to detach more from him - I know it's hard, but it does help. Rise above it - think about you and not him. Daughter won't live with them - she may try it, but she'll soon be home, because kids gravitate towards love and warmth. There will be little of it in Disgracelands - I assure you. And also, I doubt Bridget Jones knickers will want her love nest invaded by another man's teenager - because that means she will have to compromise and watch PTM in his role as "devoted daddy" and selfish women who take on another woman's man, often don't have the soul to take on their kids too.
Push ahead with the divorce - don't respond to his stupid controlling games, don't waste your energy and brain cells on engaging with him - he is not worthy.