Researchers at Ohio State University just released the results of a 20-YEAR study . . . where they monitored 1,000 married couples for two full decades. And they found there are four basic types of marriages . . .

 --Validator marriages. Couples with equal decision-making input and lower levels of conflict. 54% of people are in these marriages, and most are very happy. These marriages have lower levels of divorce.

 --Avoider marriages. 6% of couples follow "traditional" gender roles . . . wives do housework, husbands make money, and divorce is NOT an option. Believe it or not, they don't fight often . . . since there's no chance at divorce, it's not worth arguing.

 --Volatile marriages. 20% of people are in marriages with HIGH conflict . . . but also high levels of happiness. Basically, the highs are very high, and the lows are very low. They have a decent chance of divorcing.

 --Hostile marriages. 20% of people are in marriages where they fight constantly and are ALSO miserable. These couples almost always get divorced.

 --The study also found that the amount of fighting in a relationship rarely changes over time. So if you fight constantly in your first few years, you'll keep on fighting that much forever. If you don't, you won't.