
Valentine’s Day, love songs, romance novels—do they influence falling in love? On the surface it seems like they do, but scientific research suggests that there’s another cupid at work: instinct. Love, specifically the passionate variety, is an emotion that is almost beyond our control. Humans, it seems, are programmed to take this amorous tumble. Forget the roses and heart-shaped box of chocolates—it’s our genes that are on the hook for our addiction to love.According to Elizabeth Pillsworth, assistant professor of evolutionary anthropology at California State University, passionate love has been around since the dawn of time. “It's hard to say with any great confidence when the emotion of love may have evolved,” says Pillsworth, “but given...