Well, prior to us dating, my H always said 'I can't do just friends with you' and 'you can't go back to chit chat after you've slept with someone.'
He always tried it for a few weeks and then would want to sleep with me, and then he'd get angry at me because of his conflicting feelings.
He never let me have any say over the kids at all, not their education, medical or anything despite the fact I have PR. He just said 'I have custody' and still thinks that now.
He always said I could see them 2 days a fortnight because he was fulfilling his obligation to give me contact, but anything outside the bare minimum of what he was legally required to do, he wouldn't.
Even on my time, he would stipulate what I could do with them and then send nasty emails if I did something he didn't like.
He would never have Christmas with me etc until last year. He's a lot better now we are seeing each other and tries to listen more, but I get the impression he still thinks they are 'his' (not ours) and I know if the R were to fail (which I really hope not) he would get hurt and angry and basically stop all but minimal involvement.
I know him so well, I know this would happen. He's been running his home ed group for 18 months and I've not been once. It seems a massive gamble to take for the kids, but then I am hoping it will work as it was positive last time he visited.