I absolutely loved this book. I do have to admit at the beginning, I had a bit of hard time getting into Tahereh Mafi's lyrical writing style. But once I got the hang of it, I just sailed through the story. The MC Juliette was fleshed out perfectly. Can you imagine not being able to touch people? Tahereh does can excellent job of drawing out the raw emotion of the character. I felt everything - her insecurities, joy, hope, fear and so on. 
 With regards to the two love interests, Adam is portrayed as the likely hero but I couldn't get very attached to his character. Yes, he is handsome and cares for Juliette. But I wasn't really invested in their interactions with each other. I didn't think there was much chemistry. Warner, on the other hand, was just so complex and a total bad-boy. I was looking forward to reading his parts in the book. I think I'm totally in love with him even though he is a psycho and a murderer XD 
 As to the worldbuilding, I have to say there wasn't much there. The story was more focused on Juliette, her feelings and the romance. I would have enjoyed reading more about the society. We just get a gist of it from the character's conversations. 
 There are a fair amount of action scenes in the book. This was the only place where I actually admired Adam's character. I was also stunned my the twist at the end. Did not see that coming and it definitely gives the book an X-Men vibe which I love. I really looking forward to reading the sequel and seeing what comes next :)