The mash-up of all those cliched dreamy films like Kuch Kuch hota Hai, Kabhi Alvida Naa Kehna, Kal Ho Na Ho & Rockstar, that are high on cinematography and melodrama but low on realism.
There is this intense passion/love Anushka sharma has for her ex-boyfriend Fawad Khan, but we do not get to see their story.
Aishwarya Rai Bachchan is a divorcee poetess who meets a heart-broken Ranbir Kapoor and falls in love with him.
Shah Rukh Khan makes a small guest appearance.
If you have watched Rock Star then you might compare the story to it.