According to a new study by the University of Texas, the key to a happy marriage is a husband who works long hours.

Researchers found that husbands who worked at least 50 hours per week had the happiest wives.

Why? The researchers believe the wives were happier because husbands who work more hours tend to make more money.

The study also found that the same does not apply the other way around -- when a wife works at least 50 hours per week, it does not lead to a happier marriage.

Read more: Daily Mail