Oh OP what a difficult decision for you. Normally I’m the first to post LTB, some of the shit women on put up with on here make me aghast!!
BUT it sounds like this man has many many redeeming features and you genuinely seem to like/love each other.
Yes what he said was pathetic and crass, and maybe you should have replied what younger woman would want you!!? It always makes me laugh that men think a woman younger than them would want them. Unless they are a multi-millionaire or famous, why would they? I mean look at Leonardo de Caprio, does he think he’d have those glamorous girlfriends if he was Barry from Accounts. Sad pathetic man!!
Anyway I digress, yes what he said was pathetic but you have a good life and it sounds like you’d miss his companionship, support and company. If you were in your 20s would I give you advice to stay with him? Hell no!
But truth be told, at our age there aren’t that many more fish in the sea, well not good ones anyway. I’ve been single 10 years as my standards are very high and would love a relationship like yours.
He realises he’s crossed a line, but only you know if you can get over his remark. Personally I think in a couple of months you’d miss him, if not sooner. He appears to bring a lot of positives to your life.
Good luck whatever you decide.