[SPOILERS] Why did you like this movie? I hated it.
There was no progress in this film. So at the very beginning the best friend of main character kills himself. What do we learn about the best friend - really nothing. So why we care if he dies - we don't care. Then the best friends girlfriend gets sick - what's wrong with her? We don't know. Is she going to get better? We don't know. Does the main character discuss with real doctor - no he doesn't.
Then meanwhile the main character meets this one guy who is good with women and they discuss about going to pick up women. Do we see any of this action - no we don't. Then later we see the girlfriend of this pick up guy and just a bit later learn that she killed herself - do we care about that? No, since we know practically nothing about her! Then at some point we meet a man trapped in hospital bed - and in the next frame we learn that he died. Do we care about him either? No! We don't even know him.
So why did the main girl did not get over her mental illness - we don't know. Why was she able to kill herself? We don't know that either. After all the events in the film - did the main character grow, change, learn from his experiences - we don't *ffffffffffing* know! We know nothing about the main character before and after the events in the film.
The only interesting part in the film was the interaction between the main character and this annoying sunglass girl. But I felt that everyone else in the film were main characters except the real main character. He was introverted blank character with no edge, goals, passion - the worst kind of character because we don't really care what happened to him since he did not gave us any reason to care about him.
If you reply to this, please do not refer to any books. This is my opinion about the film and by all means, give your perspective but stay within the content of the film.