NON-SPOILERY: 
 I have a lot of thoughts. 
 1) As expected, I read this book all in one day. I feel like John Green's books just do that to me. 
 2) Reading this felt how I imagine it feels to fall in love. It was delightful and scary and funny and hit me hard it places. 
 3) I'm constantly surprised at how well a 40-year old man can write teenagers, but he did a fantastic job with Aza and the rest of the cast. 
 4) As usual, I loved the characters. 
 5) Did I think it was a perfect book? *Whispers* No. I loved it, but not in a "there-isn't-a-sentence-I-would-change" sort of way that I felt about TFIOS. 
 6) GO READ IT, PEOPLE. 
 7) I was lucky enough to see John and Hank Green live in DC on the Turtles Book Tour. It made reading this even more of a magical experience. 
 Okay, now for the spoilery stuff: (view spoiler)[ 
 I HAVE SO MANY THOUGHTS. 
 1) I loved the characters, as previously mentioned. Aza is really cool. Davis is a well-written nerd, nice guy, hurting teenage. And DAISY. DAISY IS EVERYTHING. 
 2) The way that mental illness was written about was really well done. It was so neat to get a glimpse into the head of someone with OCD or Anxiety Disorder, and it gave me more compassion for those I know with mental illness. 
 3) I did feel like the plot dropped off a little bit in the last quarter of the book. Like there was a little too much "falling action." But TBH that is my only complaint. 
 4) I adored the emphasis on platonic friendships, and the way that Aza and Daisy tell each other that they love each other, and remain friends for the rest of their lives, and make up after fights. It felt so real and important and honestly their friendship was my favorite part of the book. 
 5) How did I feel about the ending with Davis? I liked how things are left up in the air. 
 6) There were several little scenes where I could just FEEL that this was written by John Green, the guy I know from the VlogBrothers. The World's Biggest Nerd, the pizza- and poetry-lover, the person who feels like a friend. And that was really, really cool. (hide spoiler)] 
 CONCLUDING THOUGHTS: I loved this book. It might not top TFIOS, but it is beautiful in its own way. It will definitely get re-read many times.