Okay, I actually loves both the book and the movie. First, I ended up watching the movie and become scared to the read the book for a little while because I knew I'd cry at the end.
I did cry, but the book itself kept you in moments of suspense. I'd have to say it's one of the saddest YA books I've read, but I really love the romance set up between Hazel Grace and Gus.
I also loved Isaac and how big of a character he was (even though he was a side character). I'd recommend this to everybody wants to read a deeply heartfelt book.
WARNING:
This book heavily mentions Cancer and the affects it has on people's lives. This goes through the lives of Hazel Lancaster and Augustus Waters, both of who suffers from cancer.
Hopefully this helped, happy reading!