How does love at first sight happen? Is there any science behind love at first sight?

Scientists believe that when people meet a potential partner, immediate eye movements may be a hallmark.

When people describe how they met their partner, they often describe how their eyes meet, or their face stands out from the crowd. Now, scientists believe that when people meet a potential partner, instant eye movements can be a clear sign of whether they're after love.

Researchers analyzed people's eye movements as they looked at black and white photos of attractive spouses and strangers, and judged whether the people they saw elicited feelings of romantic love.

The results revealed an interesting pattern. When the subjects judged a stranger as depicting feelings or romantic love, their eyes stayed fixed on the stranger's face.

What's more, the scientists found that judgment about this topic can occur in just half a second, suggesting that the method we use to categorize whether we feel love for new people is an automated mechanism.