How is love different from lust or infatuation? Do love and marriage really go together “like a horse and carriage”? Does sex have any necessary connection to either? And how important are love, sex, and marriage to a well-lived life? In this lively, lucid, and comprehensive textbook, Raja Halwani pursues the philosophical questions inherent in these three important aspects of human relationships, exploring the nature, uses, and ethics of romantic love, sexuality, and marriage.