The 27-year-old actress, who's rumoured to be dating co-star, Ranveer Singh, said that either you have the chemistry or not, Gulf News reported.
The 28-year-old actor echoed her thoughts by saying that in a film, which is about two people in love, the audience has to buy into the love story and for that to happen, chemistry is the core or driving force that leads the film.
The movie directed by Sanjay Leela Bhansali is his take on Shakespeare's tragedy 'Romeo and Juliet'.