Cooper and Gaga starred in the musical drama A Star Is Born, in which Cooper plays a hard-drinking musician who falls in love with a starting singer. The film is the fourth remake of the original movie, which appeared in theaters in 1937.
The actor did not only play in the new remake, he also produced and directed it. The film received high praise from critics and landed a spot in the list of Top 10 Films of 2018. After working together, Cooper and Gaga became very close and the actor even joined the singer during one of her shows.