It’s often said that women look for partners that are tall, dark and handsome.

But research has revealed that if your man is on the tall side, he is more likely to be unfaithful.

A report on what drives men to cheat found that the majority of those that admit seeing another woman behind their partners’ back were over 5 feet 10 inches tall.

In fact, the study included in a report by online affairs website Ashley Madison found that taller men were twice as likely to cheat when compared to those under 5 feet 10 inches.

It is not known why this is the case, but experts have said that so-called “small man syndrome” may mean that shorter guys are not as confident with women.

The research also comes following another report that said that if your partner’s age ends in a 9 you should also keep a close eye on them.

In a 2014 study published in Proceedings of the Natural Academy of Sciences, people who were facing a landmark birthday were more likely to be unfaithful.

The thought of entering a new decade means they are likely to take more risks and be more spontaneous.

Meanwhile, another factor on whether your man will cheat is intelligence, with Ashley Madison revealing that three percent of its members have a Ph.D. compared to just 0.7 percent of the global population.

One theory is that men with higher IQs generally have more resources to keep their liasions a secret.