Sanaya Irani and Barun Sobti: Sanaya-Barun's pair will definitely go into the books of history for their remarkable popularity. Their sizzling chemistry was the driving force behind the show's attractiveness and made the show reach new heights. Their on-screen chemistry and screen presence made the fans go crazy. Though their characters were poles apart in cultural background and persona, but Khushi and ASR belonged to each other. In fact the real reason behind the shows successful run was Sanaya and Barun's hit pair. Unfortunately, Iss Pyaar Ko Kya Naam Doon recently bid adieu to its fans when Barun decided to quit the show to pursue career in films as even the makers of the show were very well versed with the popularity of Sanaya-Barun's Jodi.