When it comes to love, some people would say it is one of the most important human emotions. Love is a set of emotions and behaviors characterized by intimacy, passion, and commitment. It involves care, closeness, protectiveness, attraction, affection, and trust. Many say it’s not an emotion in the way we typically understand them, but an essential physiological drive. There are countless songs, books, poems, and other works of art about love (you probably have one in mind as we speak!). Yet despite being one of the most studied behaviors, it is still the least understood. For example, researchers debate whether love is a biological or cultural phenomenon.