"The number one cause of divorce is financially not agreeing on how money is handled," Stanger notes. "Whether they have good credit or not could block any home purchase. [Also], who pays for what? Don't assume if you're marrying a wealthy person [that] they will pay for it all."
Jason Eric Ross, a psychotherapist based in NYC and Florida, agrees with this one: "You want to know if your potential partner uses reasonable judgment, and you definitely want to know if they have any debt you may take on. Someone who is fiscally responsible will bring less baggage to the relationship, and thus there will be less arguing."