When it comes to cheating, there can be a couple of different reasons why people resort to it.
But cheating on your partner because you have a good sex life? This is news to us.
Yep, according to a new study, people were actually more likely to cheat if they were satisfied with the sex life in their relationship.
Researchers from Florida State University observed the relationship status, satisfaction, and cheating behaviour of 233 newlywed couples over the course of three years.
The study, which was published in the Journal Of Personality and Social Psychology, found that people were more likely to cheat if they had a good sex life.
It also found it's possible that just liking sex could lead someone to cheat, despite feeling good about their relationship.
The study also discovered that men who had more short-term flings before marriage, or saw their partners as less attractive, were also more likely to cheat on their partner.
So although it's been drilled into our minds that couples who have a good sex life stay together longest, it could be wise to be aware that this isn't always the case...