Love is one of the most profound emotions known to human beings. There are many kinds of love, but most people seek its expression in a romantic relationship with a compatible partner. For many, romantic relationships comprise the most meaningful aspect of life, providing a source of deep fulfillment. The need for human connection appears to be innate, but the ability to form healthy, loving relationships is learned. A great deal of evidence suggests that the ability to form a stable relationship begins in infancy, in a child’s earliest experiences with a caregiverwho reliably meets the infant’s needs for food, care, warmth, protection, stimulation, and social contact. Such relationships are not destiny, but they appear to establish deeply ingrained patterns of relating to others. Failed relationships happen for many reasons, and the failure of a relationship is often a source of great psychological anguish. Most people have to work consciously to master the skills necessary to make relationships endure and flourish.