Barriers tend to intensify romance. It's called the 'Romeo and Juliet effect.' I call it 'frustration attraction.'

For so many generations, a woman's only career path was to marry well and to marry up. Those days have changed.

Any time you choose not to hide your tattoo, you're limiting your social sphere, because they're not popular in big business.

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

If two very different people pool their DNA, they'll create more genetic variety, and their young will come to the job of parenting with a wider array of skills.

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.

Women are naturally prone to compete over their mates.