Men who make less dough than their girlfriend or wife are more likely to cheat on them.
This latest revelation is according to a Cornell University study.
Christin Munsch, a sociology PhD candidate, says her study found that men who are financially dependent on their wives or girlfriends are five times more likely to cheat.
Munsch surveyed heterosexual couples between the ages of 18 and 28 from 2001 to 2007.
By the way, men were also more likely to cheat if they made much more money than their female partners.