"The One & Only" is a novel by Emily Giffin that explores themes of love, loyalty, and personal growth. The story follows Shea Rigsby, a woman who has always been devoted to her hometown and its college football team. When unexpected changes occur, Shea must confront her past and make difficult choices about her future. Set against the backdrop of a small Texas town, the narrative delves into the complexities of relationships and the impact of nostalgia. As Shea navigates her feelings for her childhood friend and the challenges of adulthood, she learns valuable lessons about self-discovery and the importance of following one's heart.