CurtWild I know it's easier said than done, but (like me) you need to work at putting this aside in your head. Work through it emotionally if you need to, but then put it aside. It'll only tear you up inside otherwise.
I've had to put things in "fact form" for my own sanity.
1- Ex has no interest in being a decent father. Fact.
2- Ex has no interest in being a decent person. Fact.
3- Ex only behaves in a manner that gets him what he wants. Fact.
4- Ex does not care how this behaviour affects anyone else, including his own children. Fact.
5- Ex does not feel any guilt or have any measurable consequence (to him) over this behaviour so will most likely continue this behaviour. Fact.
There. Now you need to accept these as the fact that they are. Why? Because it's not going to change. You can go round and round all you like, dancing to his tune, coaxing him to see the DCs, going out of your way to facilitate contact for the DCs... and he will still behave this way. He will continue to shit upon you and your feelings from a very great height. Why? Because he can.
So how do we get around this behaviour and push him into being a decent parent? Truth? We don't. But that doesn't mean that we need to allow him to rules our lives either. This is my "rules" that I make myself follow, and I do struggle, just like everyone else, but it helps me.
1- I do not request him to contact the DCs. That basically hands your life, schedule, and sanity over to his safekeeping, which is hazardous at best. If he wants contact, he'll ask. No exceptions.
2- Contact will be pre-arranged at least 2 weeks in advance. I have a life and a schedule. The DCs like to have plans to do things with me. Therefore, if he can't be bothered to contact me 2 wks in advance, that's his loss. I am not going to rearrange my entire life just so he can be verbally abusive to me in person while he ignores or shouts at the DCs and labels it "contact." No exceptions.
3- All contact will be arranged either by email or text. Nothing in person or on the phone, as it cannot then be documented. It also means that gaslighting is harder for him to do, as I have the details written out. No exceptions.
4- All contact will be in a public place. No exceptions.
5- If ex is unreasonably late or abusive/aggressive in any way, I take the DCs home and contact is cancelled. If he can't be bothered to be there on time (without very good reason - such as fire, flood, or massive pileup on the motorway), and if he can't be bothered to keep his behaviour in check, then I can't be bothered to deal with it. We will leave. No exceptions.
6- Any abuse or harassment of any kind will be reported to the police immediately. No exceptions.
This all means that at the moment, ex and I are NC, as he refuses to cooperate and can't be bothered to request contact. He apparently is much happier complaining that I won't basically bend over backwards complying with his demands.
Not. My. Problem.
My priority is my DCs and myself.
Sorry so long. I find that I can remain stronger if I outline a set of rules that I need to follow and write them down. Then I can just remind myself by reading through them when I'm wavering. 