You can tell a lot about a person just by looking at their face— their age, their gender, and even their emotional state. Now, researchers at Nipissing University in Canada, say facial features can also reveal a person’s sex drive and how likely they are to cheat in relationships.

The study, published in Archives of Sexual Behavior, found that both men and women with shorter, wider faces were more sexually motivated, meaning they have higher libidos. Men with very wide faces (calculated as facial width-to-height ratio, or FWHR) had a higher sex drive than others and were more open to casual sex that does not involve love or commitment. They also considered being unfaithful to their significant others.

“Together, these findings suggest that facial characteristics might convey important information about human sexual motivations,” Steven Arnocky, lead author of the study, said in a statement.