Naina and Samir, who are a couple, are passionate about each other. They are physically and sexually attracted to one another. They know that they can count on each other during the ups and downs of life, and they intend to maintain their relationship in the face of problems. However, they lack feelings of warmth or closeness toward each other and avoid sharing their thoughts.
According to Robert J. Sternberg's triarchic theory of love, Naina and Samir are most likely experiencing:

A. affectionate love.
B. consummate love.
C. romantic love.
D. fatuous love.