3-Idiots (AWESOME) - Why is chetan bhagat crying?

I finally saw 3-Idiots today and OH MY GOD!
Rare are the occasions when the movie adaptation of a popular book does justice to it, this is not of those times. Rajkumar Hirani has managed to do what even Hollywood directors fail to do, make the book seem like shit in front of the movie. Not only was it a great movie, it was one of the greatest experiences in a cinemas. I'm pretty sure that 'balatkari' speech will go down in history as one of the funniest moments ever in Indian cinema.
Back to the point, since i have every right to voice my opinion i will say Chetan Bhagat is being an ass, ok the movie is a little inspired by the book and the makers have acknowledged it and have paid for the rights and stuff, so it is pretty apparent Chetan Bhagat is (apparently) trying to cash in one the movie's success, which it totally deserves by the way, i hate it when stupid crappy movies like "Ajab Prem Ki and crap" do good business, makes me feel sad about the level of stupidity that is prevalent in this country of mine.
And i don't know how they did it, but Aamir Khan and co. DID manage to pass themselves off as college kids, and they did really really well.