MUMBAI: You have seen him as the lover-boy for quite some time now. Now Bollywood heartthrob Shah Rukh Khan will sharpen his paternal instincts on screen after a while. SRK plays a father to a seven-year-old son in Karan Johar’s ‘Kabhi Alvida Na Kehna’ that is based on human relationships, marriage and extra-marital affairs. The last time that Khan played a father was also a Karan Johan film - ‘Kabhi Khushi Kabhie Gham’ in 2001. ‘Kabhi Alvida Na Kehna’ also comprises an ensemble starcast of Amitabh Bachchan, Abhishek Bachchan, Rani Mukherjee, Preity Zinta, John Abraham and Arjun Rampal. — Agencies