"When a Man Falls in Love" is a romantic song that explores the deep emotions and transformative experiences a man undergoes when he falls in love. The lyrics convey feelings of joy, vulnerability, and the desire to connect with a partner on a profound level. The song often highlights the changes in a man's behavior and outlook on life, emphasizing how love can inspire him to be more caring and attentive. It reflects the universal theme of love's power to bring out the best in people, making it relatable to many listeners.