I know what you mean about them having a hold over you through the dc. I am now a disbaled LP with 4 dc, two of whom have SN. I end up relying on Ex-P way more than is good for me, as I have no-one else that can cope with my sn dc. But it's all on his terms, and when he HAS helped out (like when I went to the dentist to get my tooth removed), He goes around telling everyone how kind he is to me, and asks (in a roundabout way) if we can get back together - in a 'look how helpful I am' way. Yet when we WERE together, he would NOT have looked after the dc for me??!! It all seems to come with strings, when I told him he hadn't changed, and I wasn't getting back with him, he started sulking.
Anything that doesn't fit HIS view of the world is ignored by him. So as far as he's concerned, he's changed, so I must take him back. Nothing else is acceptable, or even real! Yet when I tell him I'm not going back to that situation again, and he should have been doing this stuff ANYWAY when we were together, he just says "I know, I was a c*nt, I was stressed with work, and my Anti-D's had side effects that made me behave like that, but I'm better now I'm off them" (NO, YOU AREN'T, YOU JUST HAVE UNTREATED DEPRESSION NOW). He doesn't OWN his behaviour at all, and he always finds something or someone else to blame it on.
I am going to struggle this afternoon when he comes round to see DS2 & DS3 - I am in a really Bitchy, Sarky mood, and biting my tongue is going to be easier said than done, if he comes out with another of his comments about how he's changed and wants to get back with me. The only reply I can think of today is "I wouldn't get back with you if you were the last man on earth as you will not treat me the way I should be treated in a relationship, and there is no point in trying to 'win' me back - I don't want you in that way. I only want you to be a good father to your dc".
But that will put his back up, and he'll start doing stupid things like phoning SS if I do that. I cannot be that blunt with him because of the things he will try to do. So even though we've been apart for 13 weeks, I am STILL walking on eggshells with him. How do I stop? When I risk him phoning SS making allegations against me that they HAVE to follow up, same with DWP (he'll try that, too).