Sternberg's Triangular Theory of Love

Sternberg's theory identifies three core components: intimacy, passion, and commitment. Intimacy involves sharing personal details, feelings, and thoughts beyond surface conversation, creating emotional closeness. Passion is an aroused state of physical attraction and positive absorption in another person. Commitment is a cognitive decision to initiate or maintain a relationship. These components combine in different proportions to create seven distinct forms of love.

Consummate love is the only form containing all three components: intimacy, passion, and commitment working together. While other love types lack one or more components, consummate love represents the ideal relationship where partners share emotional closeness, physical attraction, and mutual dedication. However, even consummate love can fluctuate over time as different components wax and wane throughout a relationship's lifespan.

Infatuation consists solely of passion without intimacy or commitment, making it an addictive mode of attraction often present at a relationship's beginning. Romantic love combines passion with intimacy but lacks commitment. When passion and commitment combine without intimacy, it creates fatuous love, such as a love affair. Each configuration produces distinctly different relationship dynamics and emotional experiences.

Companionate love combines intimacy and commitment without passion, representing a truly deep friendship characteristic of close family relationships and long-term partnerships. It develops when the initial passion fades but emotional closeness and dedication remain strong. This maturational bond reflects relationships where partners have built mutual trust and emotional connection through sustained self-disclosure and reciprocal sharing of personal experiences.

Empty love occurs when commitment exists without intimacy or passion. In this state, an individual has cognitively decided the relationship exists but has made no further emotional or physical effort. Empty love represents a relationship where partners remain together based on obligation or decision alone, lacking the emotional connection and attraction that characterize other love forms.

For love to endure inevitable setbacks, the number of positive rewards and interactions must outweigh negative encounters. This balance determines whether relationships survive challenges and continue developing. Understanding social exchange theory cost benefit analysis relationships helps explain why partners maintain motivation to invest in intimacy, passion, and commitment, supporting the relationship's long-term viability.

Sternberg's theory recognizes that love components vary over time within a single relationship. Partners may begin with infatuation dominated by passion, then develop romantic love as intimacy grows. Over years, passion may decrease while commitment and intimacy strengthen, shifting toward companionate love. Understanding this progression helps partners recognize that changing love expressions reflect natural relationship evolution rather than diminished affection or connection.