The actress will next be seen starring opposite Kapoor in the romance Yeh Jawaani Hai Deewani.
She told Mumbai Mirror: "Today, Ranbir and I understand each other better. We have found a friendship that we didn't have when we dated.
"I don't have time to invest in a relationship. I have become a lot more guarded. And on dates, I am totally focused on my career.
"I am not someone who shows her emotions very easily. I am strong. But yes, Ranbir is a friend and he will always be there for me."
Padukone has previously admitted that she still turns to her ex-boyfriend whenever she has any problems.
In April, it was reported that the two actors will not appear in any intimate scenes together in their upcoming film.