Imtiaz Ali shares a warm bond with Ranbir Kapoor ever since they worked together in 'Rockstar' (2011).

The filmmaker gelled with RK, but not with 'Rockstar' actress Nargis Fakhri, whom he launched in Bollywood.

When the film was being shot, the unit was like a close-knit family, but once it wrapped up, things changed - Nargis realised that's how Bollywood functions.