The 27-year-old actress has previously worked with Ranbir in 2008 film 'Bachna Ae Haseeno'.
"The fact that we are comfortable with each other is why we chose to do a film together whether there is an intimate or romantic or angry or action scene... It does not change. Ayan (director) knows us best and if he would have felt that we would be awkward or uncomfortable, then he wouldn't have cast us," Deepika said in an interview here.
Looking at the promos of their upcoming film, one can't miss on the chemistry that the ex-lovers share on screen.
To which Deepika says, "Chemistry is always there in characters. When people go and watch a film they feel the hero and heroine are looking good together... A lot of it is because of the chemistry, the lines and performance that we have to deliver. Chemistry is intangible.. Either you have it or not."
'Yeh Jawaani Hai Deewani' is directed by Ayan Mukherjee and releases on May 31.