I'm indifferent to this book. 
 It deals with some hard stuff. Cancer mostly. A bit of love and friendship. Typical teen angst. 
 Here's the thing, the book was good, the subject was always sad with a lot of happy thrown in. But. You love when I add that but. But the characters are unrealistic. They are too adult. Too well read. Too well versed. Too perfectly unreal. 
 Did the author mean to do that or is he such a literary unreal himself that that's how he truly views teens? Does he view them as smaller versions of himself or is he projecting how he wants teens to be? Because let me tell you, no teen I have ever met comes close to the image Green draws of Hazel and Gus.