Really well done on kicking him out.
Now you have to go the next step.
Which is to say that he comes to the children when it is convenient for YOU. Not him. No more bedtimes. he can take them at weekends for the day. That's normal.
He texted to say he isn't coming tonight. I told the DC and they all shrugged (or in one case smiled). Is that the sign of DC desperate to see their dad??
Your children have blossomed without him, you say.
I wonder how long he'll keep coming once he realises that you aren't going to crumble for the manipulation.
For years I have managed the utter shit he sometimes says, by deflecting or telling the DC the truth. But I can't do that if I'm not here.
You don't say how old your children are but it sounds like they might already have a very good idea about who and what he is.
You want him to feel better - why?
Part of making amends for screwing up and consuming someone else's life (yours, in this case) is feeling bad. It's coming to regret what you've done and coming to actually genuinely feel some of the pain of what's happened and what you've done, how much you've heart someone.
If there is any chance of him becoming a decent human being instead of someone who sucks the life and joy out others, then he has to go through that process. you're not helping him by comforting him, no matter how sad you are for him.
You also need to put that care and concern towards your children. It can't be easy to turn off that concern for someone else when you've lived with them for years, but it's the next step you need to take.
You don't need to be mean, but I would suggest lines like "I am not the right person to talk to, talk to a friend" said calmly and neutrally. "I'm sorry you feel like this but I'm afraid that it's over". "If you really care for me now, if you really have changed, then give me what I need. Give me time and space to heal after all these years. That's what I need and want. Not tears and more of your emotions".
Remember, he threatened suicide and didn't mean it. He cries, it's very very unlikely he means anything real by tears either.
I also wonder just how often he'll come for the children's bedtime when he realises that you mean it, that it's over.
Hide your vital paperwork and anything you treasure at someone else's house. EA people can get very nasty indeed when they realise they won't get their own way.