Hope I can explain this properly - sorry it's a bit long.
DP and I are completing on our first house on Friday. We have semi-separate finances - we contribute proportionally to a joint account as he earns more. Mortgage payments will come out of this but deposit, fees, etc. have come out 50-50 of separate savings, which are about equal, except some his are tied up in long-term savings accounts so not accessible.
I have budgeted costs for white goods, furniture, etc. and it is more than we were expecting. He won't have immediately accessible savings for half and he refuses to have me pay more, even though I would want us to pay back into savings (whichever we used) monthly to build them back up. AIBU to think if it's "our" money when he is contributing more to the mortgage, it should be "our" money if I am contributing more upfront to a "loan" from our savings?
I told him that if it's "my" money, I'm going to use it on (for example) a dining table (he wants to manage without the latter until we have saved up) and now he is annoyed with me.
This is the first time I have had more money available than him. We usually have very similar attitudes to spending/saving so I am surprised at his reaction and it has upset me quite a lot. He thinks I should see it as a positive that he doesn't want to "take" my money, so we're at a bit of a stalemate!
Long term plan is to get married and merge finances but both keep some savings separate "just in case".