Is he looking at me? Did she just smile at me? Flirting is fun and exciting, but did you know it is an essential part of our evolution, too?

This coquettish, amorous interaction between men and women is a crucial component of human life that has facilitated relationships since the beginning of time.

But how much is too much? And when is it not enough?

It is part of our biological nature to be attracted to and express interest in the opposite sex. Beyond the physical and mental attraction to a person, social psychologists have found there is an innate evolutionary approach to attraction that focuses on the probability of reproductive success with that person. All the sudden harmless flirting seems to be serving a greater function.

The Art of Flirting