Well I as have read all the books of Chetan Bhagat, without ignoring the urge to read Half Girlfriend also, I got this from crossword. Well it was a somewhat disappointment and unexpected from Chetan Bhagat to go too filmy in the books. Although his writing style, grammar, one liners everything is similar to other books but the story did not allow me to stick to it.
The plot he has mentioned was well a new one and it was all fantasy about the love between guy and the girl but Indian crowd is used to such genre in the three hours bollywood movies.
However, if you are even a small fan of Chetan, you could read this to continue your count by this author and you may enjoy his story.