8 Times Actors Broke Up On Movie Sets

8. Diane Keaton And Al Pacino's Romance Did Not Survive The Godfather Trilogy 

The Godfather trilogy looks about as tame as an episode of The Walton's when compared to Diane Keaton and Al Pacino's ill-fated off-screen romance.

Soon after meeting on the set of The Godfather (1972), the two actors began dating. Upon the film's release, the pair were catapulted to fame, quickly becoming one of the most recognisable couples in Hollywood. However, by the time shooting for The Godfather Part II (1974) concluded, their on-again, off-again love affair had more or less fizzled out.

Fifteen years later, they were reunited when they resumed the roles of Michael Corleone and Kay Adams for The Godfather Part III (1990). Keaton's feelings for Pacino were stronger than ever, but he appeared to take a more relaxed approach to their relationship, prompting her to issue him with a marriage ultimatum. Much to her disappointment, Pacino declined to get down on one knee, which finally saw them part ways for good around the time shooting concluded.

Despite their fraught history, it seems that the former couple bear no animosity towards one another. Pacino, who is now a father of three, went on to have a string of relationships with different women after their breakup, while Keaton became an adoptive mother to two children in her fifties. In 2017, Pacino paid tribute to Keaton at the AFI Life Achievement Award ceremony, describing her as a great artist whom he would love forever.