This document discusses various aspects of personal relationships. It begins by defining what a personal relationship is, noting that humans have an innate need to belong that stems from our evolutionary history. Attachment styles that develop from infancy are also examined, including secure, avoidant, and anxious-ambivalent attachments. The document then explores what drives attraction between people, such as physical appearance, proximity, similarity, reciprocity, and personality traits. It also summarizes theories about the stages of falling in love. Components of love like intimacy, commitment, and passion are defined. Finally, the document discusses developing commitment in a relationship through accumulating rewards, limiting temptations, and increasing investments.