Why did Ranbir make Anushka cry?

Anushka Sharma is known to be one of the tough actresses in Bollywood. But recently there was someone who made the pretty heroine cry. No, it was not her cricketer boyfriend Virat Kohli, but
her Bombay Velvet co-star Ranbir Kapoor. Anushka was recently heard saying that even though she and Ranbir are friends, both of them would fight constantly and her onscreen love also made her cry once. She added that Ranbir usually irritates people by making fun of them and one day when she couldn't tolerate it any longer, she broke down.