"Millie's Fling" is a romantic comedy novel written by Jill Mansell. The story follows Millie, a young woman who finds herself in a complicated love triangle while navigating her career and personal life. Set in a charming English town, the narrative explores themes of love, friendship, and self-discovery. As Millie juggles her feelings for two very different men, she learns valuable lessons about relationships and what it means to truly be happy. The book is filled with humor and relatable characters, making it an enjoyable read for fans of the genre.