Oh OP 💐
Your first problem is your DH is a cheating, lying, and apparently totally tactless scumbag.
Your second problem is you are deluding yourself that there’s any way to be happy with him now.
Your third problem is you are overanalysing his worthless, meaningless words, which are blatantly full of lies in any case.
I’m going to be blunt with you: this kind of man is highly likely to leave you further down the line. I’ve known it to happen to many women who forgave cheating. Try to move past it, ten years of working at it and burying your emotions while secretly enduring total misery - then boom, he leaves you for a 25-year-old.
It is never too late to leave someone who is making you unhappy and never too late to meet someone new. But it does get a bit more difficult with every passing year.
I know it’s so much easier said than done, but you need to get out as soon as you can - even if that’s a few months down the line. If you think starting again looks difficult now, how will it look several years down the line?
If you are married and he is successful you should be entitled to a fair bit. Stop putting so much energy into overthinking his words and use that energy to find out exactly what his and your financial situation is, what you’re rights are and what the next step should be.