I guess it depends on what happens with the saver's extra saved money. If it just gets used for larger fun purchases less frequently, there's no problem. If the saver uses the extra cash to invest and it's understood that it's still the saver's fun money, even when it comes time to withdraw that money during retirement, that's fine.
If it goes into the shared retirement accounts, then that might cause problems.
Then again, it just depends on attitudes. If you're a saver, but recognize that your partner's happiness in part depends on spending more, then perhaps you just won't care.
At the end of the day, you've jointly agreed on what the monthly allowance of fun money is, so there shouldn't be resentment. If there is, then you agreed to something you shouldn't have. If your partner can't agree to a lower amount, then you just have to accept that your financial/spending compatibility is low, and decide that the rest of the relationship overcomes that incompatibility. Or not, and then you break up.
If it goes into the shared retirement accounts, then that might cause problems.
Then again, it just depends on attitudes. If you're a saver, but recognize that your partner's happiness in part depends on spending more, then perhaps you just won't care.
At the end of the day, you've jointly agreed on what the monthly allowance of fun money is, so there shouldn't be resentment. If there is, then you agreed to something you shouldn't have. If your partner can't agree to a lower amount, then you just have to accept that your financial/spending compatibility is low, and decide that the rest of the relationship overcomes that incompatibility. Or not, and then you break up.