'Kal Ho Naa Ho' has completed 20 years today. The rom-com helmed by Nikkhil Advani starred Shah Rukh Khan, Preity Zinta and Saif Ali Khan. The cult movie was Nikkhil's directorial debut and was a blockbuster. His last romantic comedy was 'Katti Batti' in 2015 post which he never directed a romantic comedy. In an interview, the 'D-Day' director revealed he won't direct a rom-com again. Read on to know the reason.