Writing to my solicitor today, following our offer (he has made no offer), telling her that I have never had the kids' best interests at heart and he can't see that I ever will. And that he is not going to allow the experiment of me looking after them on my own.
(Yet apparently it has been fine for me to look after them alone every time he has recently spent the night away, or all the times he worked away from home in the past).
The whole thing had had me, yet again, questioning myself. Which I guess was the intention.
He also told her that I should make an effort to get a job. I do have a job - just a badly paid one. Term time only but I will change that. It will still be low paid though. At least for now, until I can find my feet.
At least I definitely know that he is not my friend.