Romantic love allows you to focus mating energy. Attachment sustains that relationship as long as necessary to raise your baby.

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

Men tend to be hierarchical, but women are driven to make lateral connections so they can cooperate.

In general, men are wired to notice obvious signs that convey interest in mating - a warm smile, for example - and ignore other subtleties, like if your lipstick is faded.

There is more and more data indicating that there is a biological basis to your political views.

Hair that gleams can send a clear sign that you're young and in your prime, whatever your actual age.

Natural beauty really entices men. They will tell you this time and time again, and studies consistently prove it.