I would like to ask Imtiaz Ali whether he expects us to sympathize with his main characters in the film. For, I felt utterly disgusted with the choices they made in the story. How can you justify playing with others' emotions while simply trying to analyze your love life. That's what Saif and Deepika's characters do. First, Saif has to have another girl in his life when Deepika goes, and as expected disappoints her. And Deepika has to get married to Rahul Khanna and then dump him on the first night itself! How much more selfish can you get? And we are expected to feel good at the end when Saif and Deepika truly "find" each other again. Oh, that's painful... I hope people did not like these characters and start getting these ideas about separating and then causing harm to other innocent people.
I feel if Saif and Deepika were supposed to have done negative roles in Love Aaj Kal, then this is a success for the film maker and the lead actors. I could see the negativity, the selfishness, the materialistic ambitions, the superficial emotions, the lack of commitment - all this did come out well.
However, if the director's motive was the opposite - that is, if he wants the audience to love his protagonists, to lap up all they did in the film, and go home happy, then I fear he is setting just the wrong example.