Why Do So Many Couples Look Alike? Here’s the Psychology Behind the Weird Phenomenon

In 2016, Olivia Brunner, like millions of Americans, decided to take an at-home DNA test. But Brunner wasn't motivated by pure curiosity. She bore a striking resemblance to her then-boyfriend, Greg — from their hair colors and complexions down to their facial expressions — and for years, people had commented that they looked related. She needed to confirm, for her own peace of mind, that they weren't — especially since she had been adopted as a baby.

In 2016, Olivia Brunner, like millions of Americans, decided to take an at-home DNA test. But Brunner wasn't motivated by pure curiosity. She bore a striking resemblance to her then-boyfriend, Greg — from their hair colors and complexions down to their facial expressions — and for years, people had commented that they looked related. She needed to confirm, for her own peace of mind, that they weren't — especially since she had been adopted as a baby.