Final answer:
Empty love is the form of love that only includes commitment, according to Sternberg's triangular theory of love.
Step-by-step explanation:
According to Sternberg's triangular theory of love, the form of love that only includes commitment is referred to as empty love. Empty love is characterized by a lack of intimacy and passion, but a presence of commitment. It is a type of love that may exist in arranged marriages or long-term relationships where the passion and intimacy have faded away.