The shape of your partner’s face reveals how likely they are to cheat on you

It sounds like an old wives’ tale, but the shape of someone’s face can tell you a lot about their sex drive – and how likely they are to be unfaithful.

Researchers at Nipissing University in Canada found that both men and women with ‘wide’ or square faces tend to have a stronger sex drive and be a bit more free and easy with sex.

It’s all about facial width-to-height ratios (known as FWHR) – with ‘square faced’ men seen as more dominant and attractive as short-term sexual partners.

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Men with a larger FWHR not only have a higher sex drive than others, but also are more easy-going when it comes to casual sex and would consider being unfaithful to their partners.

The researchers say the differences may be to do with variations in testosterone levels during particular developmental periods, such as puberty – which influence the shape of people’s faces.

This hormone also plays a role in forming adult sexual attitudes and desires.

Researchers compared photos of undergraduates with questionnaires – including questions on how likely they were to be unfaithful.

Steven Arnocky says, ‘Together, these findings suggest that facial characteristics might convey important information about human sexual motivations.’