FGM, well done. Well done. You are brave beyond words. You must be exhausted and drained.
Now you know a few facts:
Your soon to be exH is a deluded piece of pondscum.
He has no idea how to tell right from wrong.
He is having an affair/ shagging someone (still don't know if it's a man or a woman) and has been for years.
He is too immature to have an adult relationship with anyone. Maybe a fuck buddy arrangement, but not marriage or a family.
He will not go to Relate because he is afraid a counsellor would point out the truth about himself to him, which he already knows, out loud in front of you.
He cannot bear the truth about himself so he projects his own faults and his own actions onto you. This is the level of rationality and morality he is operating on.
(This is what toddlers do when they accuse the cat of writing on the wall rather than admit it was them).
Hearing the truth about himself or being forced to confront it would be too much of a blow to his massively dysfunctional ego.
Everything he accuses you of, he has done. He is having an affair. He is cold.
He is cruel, cruel, cruel, and calculating, and a liar (and a bad one too)
He is not husband material.
The starting point in his twisted logic is that he fancied a little extramarital excitement and went for it, and is probably planning on keeping it going. Something has caused him to cut loose at this juncture. All the rest is just BS piled high to justify everything in his own messed up head. He knows the truth but he is too much of a messed up, immature and dysfunctional gobshite to honour you with it, and he is stupid enough to try to accuse you of exactly what he is doing himself, and deluded too.
Who he is shagging, for how long, what has caused him to up sticks and leave are actually irrelevant, he is actually right there, although honesty on his part would be respectful to you. (He is not going to be respectful to you in this though).
Pay attention to what he told you about money and how he feels about it. The fact that he has some sort of ideal divorce situation in his head where the two of you will not end up fighting over the TV shows you that he has considered divorce (and will probably fight you over the TV, using his delusions of your affair as justification for screwing you until his solicitor sets him right) Keep any notes you made of today's conversation, and ask your PILs what he said to them and make note of it too.
You have surprised and annoyed him by drawing out cash. That brought him face to face with the reality that you are a fully functioning separate human being, something he only partly understands. It was a great hint by you to him that you are your own woman here, not a player in his mental drama following his script.
You both know the truth, deep down. He has given you enough information to know he is not the man you thought he was, and is actually a very nasty and immature person who is behaving really, really badly even for this type of specimen, and intends to keep on doing so. He has a massive sense of entitlement and no qualms about saying outrageous things to you and apparently to his friends about you. No phrase or act is off limits to him. He has permitted himself to do as he pleases, and fully expects no adverse consequences.
Now you know who and what you're dealing with, please go to a solicitor asap. The arrangement about paying the mortgage will need to be formally agreed upon, and he should pay something towards the girls from his pay.
(Sorry this is a really long post)
XXXXXXXXXXXXX to you and your girls. Get your friend over to take care of you if you can. Wish I could be there.