Bollywood's hit Romcom which shaped Abhishek Bachchan and Rani Mukherjee is coming with its part 2, but with Abhishek being replaced by Saif Ali Khan. This movie also featured Amitabh Bachchan and Aishwarya Rai for a supporting role and an item song (Kajra re), which might be retained but the recent reports suggests that the makers want to bring back the 'Hum Tum' magic again on screen and so want to cast Saif opposite Rani. Earlier, Saif didn't agree due to his hectic schedule but now he has given the nod and will soon start working for it. An addition to this cast is also a fresh pair of Siddhant Chaturvedi and Sharvari Wagh. Even though Abhi and Rani were a hit, this couple will not be seen in upcoming film Bunty aur Babli 2.