Carolyn Mackler is the author of the popular teen novels, The Earth, My Butt, and Other Big Round Things (A Michael L. Printz Honor Book); Tangled; Guyaholic; Vegan Virgin Valentine; and Love and Other Four-Letter Words. Carolyns most recent novel, The Future of Us, cowritten with bestselling author Jay Asher, has received starred reviews, and the film rights have been sold to Warner Brothers. Best Friend Next Door is her first novel for a younger audience.