Final answer:
Passion, sparked by physical attraction and sexual desire, is a component of love that, when combined with intimacy and no commitment, characterizes romantic love according to Sternberg's Triangular Theory.
Step-by-step explanation:
Physical attraction and sexual desire typically spark passion in a relationship. According to Robert Sternberg's Triangular Theory of Love, passion is one of the three core components of love, the others being intimacy and commitment. Infatuation is characterized by the presence of passion without intimacy or commitment. In contrast, romantic love is defined by having both passion and intimacy, but no commitment. Examples of this type of love include intense but short-lived relationships or those where a strong physical connection and emotional closeness exist, yet there is no decision to commit to one another in the long-term.