The fiery symbol often associated with passion is the heart, which is frequently depicted in red and associated with feelings of love and desire. In various cultures and contexts, the heart symbolizes deep emotional connections and the intensity of romantic relationships. The color red, often linked with both love and heat, reinforces the concept of burning passion and strong feelings. In literature and art, the heart is often a central motif in expressions of love and longing, highlighting its significance across many human experiences and cultures.