The two lead actors ended up dating for a period of time after meeting on set, but during filming, Gosling once requested that a different scene partner be brought in when he clashed with McAdams.
Cassavetes recalled the moment in a 2014 interview with VH1.
"[T]hey were really not getting along one day on set. Really not," he said, "And Ryan came to me … he's doing a scene with Rachel and he says, 'Would you take her out of here and bring in another actress to read off camera with me? … I can't. I can't do it with her. I'm just not getting anything from this.'"
Luckily they made it work for the movie, even if their romantic relationship didn't stand the test of time in real life.