Leslie Mann Jokes Robert De Niro Said She's a 'Better Actress' Than Meryl Streep

“He sent me flowers every day," Mann joked on "GMA."

The two co-star in the new movie, “The Comedian,” about an aging comic icon, played by De Niro, who gets into a fight with an audience member and is sent to do community service where he meets a younger woman, played by Mann.

Although De Niro has had to master many skills for complex roles in the past, he said learning and performing standup comedy is “very, very hard.”

“Her husband is a wonderful comedian and director, and very funny guy, and smart,” said De Niro. “He was helpful with us with the movie in giving us ideas about what to do and how to punch up the comedy in the reshoots and stuff. But it’s not easy.”

"The Comedian" hits theaters Friday.