The Fault in Our Stars

So, I guess I'm too mean and ignorant, but I guess its not my fault, It is the fault of famous books and in general famous things and people which make you more expectant and hopeful!.
I had seen the movie adaptation of the book some time maybe some yours ago but I did not remember how it ends but I was imagining Hazel like the actress that played her role and for some unknown reasons Isaac in Christopher Mintz-Plasse face, and did not remember how Gus would look but had some Robert Pattinson alike actor in my mind!
I had some emotional moments in the SAD chapter, but overall I am not very impressed by the book. It is a good book as it should be with this fame but if you have seen the movie I guess you do not miss lots of things not reading the book.