When you're in the throes of this romantic love, it's overwhelming - you're out of control, you're irrational, you're going to the gym at 6 A.M. every day - Why? Because she's there.

You size up someone physically in less than one second - too tall, too short, too fat, too thin, too old, too young, too stuffy, too scruffy.

Men are so visual, they see a woman who appeals to them physically, and it will trigger the romantic love system faster.

In courtship, who wins and who loses will determine who passes on their DNA to tomorrow.

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

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

In America, we are demanding everything from our marriage.