06/24/2011 01:10 pm ET Updated Aug 23, 2011

10 Facts About Love And Attraction

What Rules Attraction?

In general, you gravitate toward people like you. Good-looking people tend to go for similarly good-looking types, and those from a particular socio-economic background favor their own. Experts believe this happens because perceived equality contributes to a stable union. Well-known actresses pair up with rock stars, for example, because such men tend to be as rich and famous as they are. But once you get past the bone structure and bank account and into personality attributes, opposites often attract. “We’re apt to fall in love with those who are mysterious and challenging to us,” says Helen Fisher, a professor of anthropology at Rutgers University, in New Brunswick, New Jersey, and the author of Why We Love: The Nature and Chemistry of Romantic Love ($16, amazon.com). “This pull to another biological type could also be adaptive,” says Fisher. “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.”

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