** spoiler alert ** 
 Based on storyline alone, I wouldn't rate this book higher than a 3, possibly a 3.5. However, this was the most emotional book I have ever read. The story was heartbreaking and beautiful and magnificent. I bawled. 
 I have never shed more than maybe two tears for any other book, but for Maybe One Day, I couldn't stop sobbing. (Though one contributing factor to the waterworks could have probably been the fact that I was listening to the song "Wildest Dreams" by Taylor Swift during the climax of the book. I remember bawling through the chorus. "Say you'll remember me...") 
 I don't usually read books about cancer, but I picked this one up because the main characters were ex-ballerinas. I wasn't a fan of the frequent cursing in this book, and the [small amount of] romance felt somewhat unnecessary, but the emotions felt by the characters throughout the story were conveyed so absolutely flawlessly. I still get teary when I think about the ending, and it's been over six months since I read it. 
 I knew going in that it was a cancer book and most cancer books end in death. However, along with the narrator, I truly believed that Olivia would get well right up until she...didn't. And that broke my heart. 
 My mom came into my room and saw me crying over the book and was really worried. "What's wrong?" She asked. "Are you okay?" 
 "She died!" I could only wail. My mom understood. 
 Maybe One Day is a beautiful and tragic tale about friendship, loss, and love. It made me think and I even believe that it changed me just a little bit. This book drew me in and made me feel every little pain. I couldn't put it down. The ending was beautiful and I thought it was such an amazing way to help Zoe (and the reader) find closure. 
 Read this book. Just make sure you have tissues on hand.