Binding 13 is a young adult contemporary romance novel by Chloe Walsh. It centers around Shannon Lynch, a fifteen-year-old girl who has been bullied all her life and seeks a fresh start at a prestigious private school called Tommen College. There she meets Johnny Kavanagh, a popular and talented rugby player with a painful injury threatening his career. Despite his intent to avoid distractions like relationships, Johnny becomes emotionally involved with Shannon, and they develop a complicated friendship that turns into undeniable chemistry. The story addresses themes of bullying, trauma, friendship, first love, and personal growth. Shannon learns to trust someone outside her family, while Johnny discovers there is more to life than rugby. The book also involves intense emotional struggles and secrets from their pasts, with a slow-burn romance and angst-filled tension. It is the first book in the "Boys of Tommen" series and mixes sports, found family, and confronting trauma with romance.