In "My Sister's Keeper" by Jodi Picoult, the idea of love is depicted as fleeting and ephemeral, much like a rainbow. Its beauty captivates us, but it can vanish suddenly, often leaving behind a sense of longing or loss. This comparison highlights the transient nature of love, emphasizing that, while it can be incredibly impactful in the moment, it does not always endure. The imagery of a rainbow serves as a powerful reminder of how quickly emotions can shift.

This perspective invites readers to reflect on their own experiences with love and relationships. Just as a rainbow appears brightly after a rainstorm, love can bring joy and warmth into our lives. However, its impermanence reminds us to cherish these moments when they arise, as they can be gone in an instant. Through this lens, Picoult encourages an appreciation for the fleeting but beautiful nature of love, urging us to embrace its presence while it lasts.