The cruise was 5k ( the car and the log burner were 5k each) - I wouldn’t be so extravagant!!
You did say the cruise cost £15,000. Neverthless £5,000 is still a lot to spend on a holiday if you were expecting someone who is struggling to find £500 a month to pay £2,500 towards it.
You haven't answered my question about whether you have considered my suggestion about paying off the mortgage and becoming tenants in common in an appreciating asset.
You say you are very wealthy and though nobody is asking what you are worth, and nor should you say, it suggests millions.
Monthly repayments of £1,300 suggests a mortgage of around £250,000. It is a lot of debt and must be very worrying for an ageing man who might not be able to work for much longer in a physical job. He has the option to sell it, of course, but maybe if your marriage is rocky he wants to keep it as a safeguard so he has somewhere to go.
Ultimately this boils down to how strong your marriage is and how much you want to share your wealth with him.