**SPOILERS AHEAD**
I realize why many people like this movie, I also don't have anything against it. Director made sure that you connect to the characters and get involved in the movie throughout . Direction, screenplay and acting was excellent but the flaw I think was the director just wanted as many twists as possible without thinking how the characters were potrayed earlier.
For example, adi who was shown as a guy who can sort anything out and helps dia get out of her problems does the same thing she was going to do earlier when his mom dies, he doesn't abide by his own principle he had told, honestly I never felt by looking at the character he was, that he would be going to do such a thing even after he was mildly responsible for his mother's death. And yeah with all the emotions overflowing I would have loved to have a happy ending. I think the two characters deserved that after all that they have gone through. It's just my opinion though but it seems like many people loved the movie and so did I until the very end.