Biologist Robert Friar, anthropologist Helen Fisher, social psychologist Arthur Aron, neurobiologists Semir Zeki and Andreas Bartels, Charles Wysocki, of the Monell Chemical Senses Center, and Louis Monti, of Pherin Pharmaceuticals, talk on topics including the neurochemistry of love, subconscious "love mapping," the vomero-nasal organ, "romance junkies," the stimulating power of dance, and the dynamics of kissing. Experiments that analyze the effects of pheromones, correlate fear with passion, induce bonding through shared confidences, and plot the activation of brain centers in response to visual images of loved ones are featured.