The Fault in Our Stars, written by John Green, is a bittersweet romance novel that tackles themes of love, loss, and the fragility of life. The story follows Hazel Grace Lancaster, a teenage girl with cancer, who meets and falls in love with Augustus Waters, a fellow cancer patient. Together, they embark on a journey of love, hope, and self-discovery, navigating the challenges of illness and the complexities of young love. Green's poignant storytelling and memorable characters make this novel a tear-jerking favorite.