I think romantic love evolved to enable you to focus your mating energy on just one individual at a time, thereby conserving mating time and energy.

We're not very dangerous animals; we don't have a horn like a rhino or quills like a porcupine.

Blushing is thought to be linked to increased levels of norepinephrine in the brain, which may be associated with romantic feelings. It signals that we are interested and excited, which is attractive to men.

Touch is the mother of the senses. Not only are women more sensitive when they touch, but they're also more sensitive to being touched.

Games are the way we keep romance alive. They're based in human hardwiring. Playing hard-to-get or leaving a little to the imagination allows the woman to be wooed and appreciated and the man to be challenged and intrigued.

Until recently, we regarded love as supernatural. We were willing to study the brain chemistry of fear and depression and anger but not love.

Liberals and conservatives are looking for entirely different things. Their attitudes toward romance and how they court are really dramatically different. There's almost no overlap.