If Only It Were True (originally Et si c'était vrai...) is a bestselling romance novel by first-time French author Marc Levy, first published in 1999. The story follows Lauren, a dedicated young doctor in San Francisco who falls into a deep coma after a car accident. While her body remains unresponsive in the hospital, her spirit wanders free—unseen by all except Arthur, the man who unknowingly moves into her old apartment. As Arthur and Lauren form a unique bond that blossoms into love, they race against time to save her life before her body is taken off life support. Blending romance, fantasy, and emotional depth, the novel explores connection, belief, and second chances. A sequel, Vous Revoir, continues their story.