Final answer:
Sternberg identified 25 love stories that encompass various narratives including collection stories, each illustrating a deep affection or passion for something within the genre of creative nonfiction.
Step-by-step explanation:
Sternberg identified 25 love stories that people tell including: travel, horror, gardening, business, fantasy, and collection stories. The subject in this context refers to the different types of narratives that can encompass a love story — not necessarily romantic love, but a deep affection or passion for something. In this case, it is suggested that stories people tell about their travels, their hobbies like gardening, their work in business, fantasies they imagine, or about their collections are, at their heart, stories about things they love. The concept of creative nonfiction is critical here as it relates to the idea of 'true stories, well told'. This genre includes an array of real-life events, depicted in a way that is not only factual but also emotionally engaging to the reader. Therefore, Sternberg's categorization of love stories into different themes such as 'travel' or collection stories highlights the underlying thread of passion and personal importance that binds the experiences within each story.