Varun Dhawan and Alia Bhatt?s on-screen chemistry became talk of the town ever since they debuted with Karan Johar?s Student Of The Year. By the time their next rom-com, Humpty Sharma Ki Dulhaniya, was out the two were already being rumoured to be an item. But it wasn?t the audience alone who was impressed by their sizzling chemistry, filmmakers to are digging it. The two were roped in for a third time to play on-screen lovers for Karan Johar?s Shuddhi. And now we hear that Mani Ratnam too wanted to cast the two in his romantic drama, OK Kanmani. Oh yes!