Ae Dil Hai Mushkil is utterly watchable -- it's the perfect Diwali romantic movie. The only complaint is the constant, ingratiating servitude to Shah Rukh Khan that Johar displays.
Ayan and Alizeh frequently fall back on the alleged wisdom of Hindi film dialogue and song lyrics to solve the world's problems, and their inability to treat each other as adults with libidos restricts the scope of their relationship.