@felineflutter
He made it clear to OP from the start that he doesn't want any more children and that is perfectly fine. It might mean they are not compatible as a couple but doesn't mean there is anything wrong with him.
Totally disagree. To start a relationship with someone a lot younger than yourself who does probably want children when you have already had some is all kinds of wrong.
If he had any kind of moral compass he would leave OP alone.
100% this! And by moral compass she means, that a
decent mature person who actually
cares about you, OP, would have left you alone the second it became clear you don't want the same things, in fact, even before. After I became single at your age, well, I'd always been attracted to a certain man who was long divorced and had grown kids. He was the same age as this guy (except he had a bloody career, owned his own home, etc). But he never asked me out. Later, he told me why, because he knew I wanted kids and marriage and he was past that and he didn't want to mess with me because that wouldn't be fair. See the difference?
Similarly, his sister, my friend, started what was casual on both their parts with a man 10 years younger than she. She had one child quite young and then no more and had been sterilised by choice in her mid-30s. When it became clear the guy she was seeing wanted marriage and kids and was developing feelings beyond the casual, she ended things. Why? Because she's a decent person who had care and respect for others.
Let's contrast with this bloke.
He didn't care about the secure job he had during a pandemic, a job that he needs to support his kids. Puts himself first there, wwaaa, I'm stressed with office politics, burnout, etc, is entitled to start a 'new chapter'. Any mature, decent adult and parent would have thought, 'I don't like where I am in employment, but I have kids to support and bills to pay so let's look at what I can do to change things whilst in employment now so I can get something more suitable. Nope, he jacks it in and has you, muggins, polishing his CV. Similarly, I don't know anyone age 45+ who isn't concerned about age discrimination and employability who would be so conceited as to think they can just jack in their job and they'll pick up another one unless they're in some very specialised fields and even then . . . But this loser thinks he's god's gift.
He doesn't care about his kids' financial security and place to live because he's blowing the financial settlement he got rather than using it to create a safety net, nest for his kids. Again, I've got friends who are his age or older who've been divorced after many years of marriage and whose kids are grown and their first thoughts on getting a settlement is to buy their own place for security and invest in a pension, whilst keeping their jobs, because mature adults consider the future and act in their own best interests to protect themselves.
Old stories, coke and motorbike. C'mon, OP, how can you not have the ick?
He saw you coming! But anyone decent wouldn't have gone there. But then, he's shown over and over and over and not just to you, that's he's not really a mature, functioning adult but a workshy shirker and user.