"The Upside of Unrequited" is a young adult novel by Becky Albertalli that explores the complexities of unreciprocated love. The story follows Molly, a high school student who has experienced unrequited crushes throughout her life. As she navigates friendships, family dynamics, and her own feelings, Molly learns about self-acceptance and the importance of being true to herself. The novel highlights themes of identity, love, and the challenges of adolescence. Through her journey, Molly discovers that unrequited feelings can lead to personal growth and deeper connections with others, ultimately shaping her understanding of love and relationships.