Why do our pupils dilate when we’re aroused?

You look into his eyes, his pupils have grown large and hungry...

A study of 60 young adults (aged between 18 and 26) found pupils of 5 millimetre diameter most attractive. Why do our pupils dilate when we’re aroused? Anatomy experts AMANDA MEYER & MONIKA ZIMANYI explain… His gaze softens as he draws closer to you. With one hand around your waist and the other cradling your jaw, he pulls you in. You look into his eyes, and notice his pupils have grown large and hungry. So the story goes in every other romance…

Why do our pupils dilate when we’re aroused?

His gaze softens as he draws closer to you. With one hand around your waist and the other cradling your jaw, he pulls you in. You look into his eyes, and notice his pupils have grown large and hungry. So the story goes in every other romance novel, where enlarged pupils are commonly enlisted as imagery to indicate sexual arousal. And it’s not unusual to read advice online suggesting dilated pupils are a sure sign someone you like also likes you …