A Rolex watch or an expensive car are the things guys often use to show status, wealth, and basic desirability.

Romantic love is an addiction.

The main characteristics of romantic love are craving: an intense craving to be with a particular person, not just sexually, but emotionally.

Mothers really were not built to raise babies not only by themselves, but with only a partner. For millions of years, a woman had much more than just her husband to help rear her young... This whole idea of 'it takes a village to raise a child' is exactly how we're supposed to live.

As social animals, we need to exchange juicy tales about someone - to connect with one another. For millions of years our forebears must have sat around the campfire, whispering about everyone they knew.

Neither gender is routinely more jealous - although women are more willing to work to win back a lover, while men tend to flaunt their money and status and are more likely to walk out to protect their self-esteem or save face.

Young women today do not marry the men they met in high school, or even the one they go out with at college, because they do not need to.