I don’t think we’re an animal that was built to be happy; we are an animal that was built to reproduce.

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

Your sweetheart calls you by another's name. His eyes linger too long on your best friend. He talks with excitement about a girl at work. And the fire catches. Jealousy - that sickening combination of possessiveness, suspicion, rage, and humiliation - can overtake your mind and threaten your very core as you contemplate your rival.

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

People compose poetry, novels, sitcoms - for love.

When you massage someone, the levels of oxytocin go up in the brain, and oxytocin is one of the chemicals that drives attachment.

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