This is one I cn relate to! Maybe trying to discover why the person is so resistant to budgeting. Is this from childhood issues, such as being raised in an environment where being deprived was the norm or being raised with a sense of entitlement where everything was handed to them?
There are a number of options here:
If it has been a short term marriage, no kids, you can always go your seperate ways.
You can always set up a household account as was suggested above and keep the rest separate, or have each person responsible for different expenses.
I love DH and would not see divorce as an option, so we divide expenses and cash assets. I've had some negative comments when I have written about this before, but given that we have been together going on 25 years, it works for us..
I declare to you that woman must not depend upon the protection of man, but must be taught to protect herself, and there I take my stand. ~Susan B. Anthony