I can think of 7 ways to NOT fight about money
1- win a loto
2- realize 90% of the households have the same situation
3- hide the fact you save so that you simply "have" to dip into the others spending habits, just to survive.
4- have LOTS more sex.... so much the other will be too tired to spend
5- Tire the spending partner out with wild and carefree sex
6- if the spend thrift partner agrees - have sex 3+ times a day
7- if step one does not work - and step 2 does not make you feel any better... then repeat steps 3-7 as many times as needed