It's supposed to be a lot of work to keep a HAPPY MARRIAGE.  Who knew it was THIS easy?

According to a new study, the secret to a happy marriage is . . . keeping your thermostat at 72.

Researchers found that 55% of couples argue over the temperature in the house and 35% say they NEVER agree on temperature . . . but 72 is the best compromise, even if that sounds a little warm to you.

Women are nine times more likely than men to get cold in the house . . . so turning up the thermostat to 72 is a good spot to keep women warm without men getting TOO hot.