Final answer:
Companionate love, as described by Robert Sternberg, arises when there is intimacy and commitment in a relationship, but no passion. It's often seen in close friendships and family relationships.
Step-by-step explanation:
According to Robert Sternberg's triangular theory of love, companionate love develops when intimacy and commitment are present, but without the element of passion. This type of love is often found in close friendships and family relationships, where there is a deep bond and a decision to stick together through life's challenges, but without the romantic or physical attraction usually associated with passion.
For example, a long-term marriage where the initial passion has faded, yet a deep affection and mutual support remain, would be considered companionate love as both partners are deeply intertwined in each other's lives and committed to one another, yet the spark of passion might not be as intense as in the early stages of the relationship.