Why We Love

Maybe we don't want everything to boil down to science, but scientists keep chipping away at the mystery of everything we see and do. Now, they're burrowing in on love.

You may think it's moonlight and roses. They see evolutionary biology and neurotransmitters. Ninety-seven percent of mammals don't pair up to raise their young. We humans pair up — and break up — with a vengeance. Why?

"Oh that you and I escape from the rest, and go utterly off, free and lawless," wrote Walt Whitman. What is that about, Valentine?

This hour, On Point: Science speaks. This is your brain on love.Guests:

Helen Fisher, biological anthropologist at Rutgers University.

Arthur Aron, social psychologist at the State University of New York at Stony Brook.

Susan Hughes, professor of psychology at Albright College, conducted a survey on kissing.