This anthology investigates the diverse manifestations of romantic affection by curating a collection of historical and personal correspondence. Antonia Fraser, a noted historian and biographer, utilizes her editorial expertise to select letters that demonstrate significant emotional intensity. The framework organizes these documents into thematic categories such as passion, ecstasy, and farewell, providing a structured look at how individuals across different eras have articulated their intimate experiences.

Critics often note that the anthology succeeds in capturing the raw, unfiltered nature of human connection through its varied selection. Readers frequently highlight the balance between famous literary figures and anonymous voices as a primary strength of the collection.