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John Green's bestseller - now in paperback! Kissing isn't easy at all! At least that's true for 16-year-old Aza Holmes. She has just fallen in love with the smart and sensitive Davis Pickett Jr., whose millionaire father has mysteriously disappeared. With Davis, Aza can exchange messages, gaze at the stars, and philosophize about poetry and movies. However, she sometimes struggles to even touch him. Aza suffers from obsessive-compulsive disorder, and to her, the world is filled with bacteria that threaten her. The spiral of fear in her mind keeps tightening. Aza must show courage and confront her compulsions. Along the way, she has friends by her side, like the witty and charming Daisy, who accompany her on her journey.