Actor Sanjay Dutt , whose life of ups and downs has inspired a Bollywood biopic "Sanju" that tells a father-son story , says he did not share an easy bond with his late father Sunil Dutt. While Sanjay keeps sharing memories of his father on social media , it is this bond that finds focus in Rajkumar Hirani's "Sanju" , which features Ranbir essay the title role and Paresh Rawal as Sunil Dutt.