"While on the sets, Rishiji and Taapsee bonded well over food and films, their two favourite things. Taapsee blushed at the very mention of Ranbir," said a source.
"She confessed to him that she is a huge fan of Ranbir's work. 'Rockstar' is her favourite film," added the source.
Taapsee, a popular name down south, is making her Bollywood debut with "Chashme Baddoor", a remake of Sai Paranjpye-directed and Farooque Sheikh and Deepti Naval-starrer buddy film of 1981 of the same name.
Directed by David Dhawan and produced by Viacom 18 Motion Pictures, the film also features Ali Zafar, Siddharth and Divyendu Sharma. It is releasing April 5.