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.

As a group, anthropologists are not too fond of people who work in the business world.

Women like signs of money and education - things that indicate that not only is this guy going to have some resources, but he's also willing to share them.

Anthropologists have found evidence of romantic love in 170 societies. They've never found a society that did not have it.

There's magic to love... Millions of years ago we evolved three basic drives: the sex love, romantic love, and attachment to a long-term partner. These circuits are deeply embedded in the human brian. They're going to survive as long as our species survive on what Shakespeare called, this "mortal coil."

The human brain is built to compare; it's Darwinian to consider an alternative when one presents itself.

A lot of people have been romantically in love with somebody who they feel wasn't appropriate to marry.