DH and I have separate finances - always have. Earlier this year I signed up for something that would cost around the same as our annual holiday. I asked DH if he minded me foregoing our holiday for this as I couldn't afford to do both and he agreed.
He is now wanting a holiday and I've said I can't afford it as I've spent my holiday funds on the other cost. He has no benefit from the other cost.
AIBU? I did ask him at the time. Plus he has funds and he could afford to pay for me if he wanted to go that badly.