Psychologists maintain that the dizzy feeling of intense romantic love lasts only about 18 months to-at best-three years.

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 y….

Real competition can drive up testosterone, which boosts libido..

Men and women are like two feet; they can help each other get ahead..

Like most animals, we're wired to associate height with power..

At first I assumed hate was the opposite of love. But it isn't. The opposite of love is indifference..

Women are better at reading body language everywhere in the world. As a matter of fact, it's associated with the female hormone estrogen. Women are b….

When you look at the brain regions associated with picking up data from the body, a huge amount of the brain is devoted to picking up information fro….

Throughout evolution, ostracism was death indeed..

A hundred years ago, if you had a child out of marriage, you'd be a social disgrace. Today women feel comfortable enough economically and culturally ….

People have often asked me whether what I know about love has spoiled it for me. And I just simply say, 'Hardly.' You can know every single ingredien….

People compose poetry, novels, sitcoms - for love..

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 aro….

The brain was not built to walk into a bar, where you know nobody, and start a conversation. That's not the way humanity has courted..

A woman of 40 or 50 or 60 can take estrogen replacements, get facelifts, spend her money in bars..

It's almost as if men who get tribal tattoos are trying to signal that they are dangerous, they're to be respected, and they're powerful..

Whether you're married or not, relationships - and the satisfaction tied to them - are extremely important for increasing men's and women's quality o….

Liberals and conservatives are looking for entirely different things. Their attitudes toward romance and how they court are really dramatically diffe….

Women's worst invention was the plow. With the beginning of plow agriculture, men's roles became extremely powerful. Women lost their ancient jobs as….

Women have a better sense of smell than men do, and it's even sharper in the middle of their menstrual cycle, when estrogen levels peak and women are….

Men want to think women don't cheat, and women want men to think they don't cheat, and therefore the sexes have been playing a little psychological g….