I had the same issue. My ex had mental health problems that meant he didn’t work at all for the last 13 years of our marriage. Not even a paper round ! I worked stupid hours and was, due to his issues, effectively single parent and sole carer for him as well as that job. I earnt good money and had been main bread winner by far for a further 7 years on top of that
He inherited after his parents died. He decided to keep their flat and rent out - but invested a stack of money in refurb to do that, that took 5 years to then turn a profit . When he switched the deeds he did so into his sole name. And always referred to it as “my” house. The cash he inherited went into accounts in his sole name.
we used a chunk of cash to pay off last of mortgage and he always said “I paid off mortgage”.
now there was some logic to him holding cash in his name, as he was a non tax payer,, so it really would have made no sense to move some to my name and me pay 40% tax on interest etc.
however, when he spoke about it, it was always “my house” , “my savings”. We never saved any of my income as it all went on paying the bills, mortgage, 2 kids etc- that was always referred to as “our income”.
most of the time I’d brush it off- we were married and legally it was all “ours”. And when we did divorce that’s how it was treated.
But it was the attitude - the miserlinesses and grabby attitude …the lack of recognition that whilst he paid a good slug of mortgage capital off with the inheritance , I’d been paying all the interest and even more capital on that mortgage solely for years and years (e.g, 27) He had no appreciation of where my earnings and “my” money had gone vs what he had contributed and then sat on, counting ”his” beans
it wasn’t the reason I divorced him though. Just one of his less attractive traits, 🤣🙄. I think it was his way of trying to gain some control and self esteem- it never sat comfortably with him that I earnt all the money despite that not being a choice of my making or wanting, and him not being able to hold down any job .
Op, there could be an element of that going on. That his self esteem is impacted by you earning more, and this is his way of trying to be more in control of your financial picture. Not saying it’s ok..but might help you approach the situation.
Might also want to point it that if you divorce that inheritance most certainly is a joint marriageable asset, and therefore it’s a joint decision where it goes.