We're apt to fall in love with those who are mysterious and challenging to us.

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

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.

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

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 game with each other.

Romantic love is an obsession. It possesses you. You lose your sense of self. You can’t stop thinking about another human being.

You can really get poked in the back and not feel it very much, but just a feather around your lips and you really do feel it.