"We don't have enough money!"
The Fight: Money certainly doesn't buy happiness, but not many people fight about having too much of it as opposed to too little. "Very few couples actually work together to create money," Heer says.
The Fix: Although there's no easy fix to making more money (if there was, we'd all be rich!), one way to avoid money-related fights, Heer says, is to set realistic expectations and be willing to "recognise where you are strong with money and where your partner is strong with money and how you can use each other's strengths to create more." If one person is a spreadsheet wiz, have them attempt a monthly budget. If someone can't control their spending, get them a credit card with a low limit. And if crunching numbers is a struggle for you both, Schwartz suggests seeking help from a financial counselor.