A new study by the University at Buffalo Research Institute on Addictions warns that if one spouse is a heavier drinker than the other, then the marriage may be doomed. If both are sots, the rate was the same as if neither drank heavily. Over the nine-year study, almost half of the couples where one partner was a heavy drinker ended up in divorce. For all other couples, the divorce rate was 30%. The rate was also slightly higher if was the wife in the marriage that was the heavier drinker.