The chemical reason love makes you irrational

We created this video in partnership with Unlikely Collaborators. Why does love make rational people obsessive? Meghan Sullivan, PhD, Helen Fisher, PhD, Gail Saltz, PhD, and Ted Fischer, PhD, trace love through the brain systems that shape reward, stress, attachment, and desire. But chemistry is only the beginning. Love may also be a moral practice: a way to pay attention, challenge bias, and ask what it really means to care.