-In December 2017, a fierce bidding war for the distribution rights of the film, which was between Amazon Studios, Universal Pictures, and Paramount Pictures, concluded with Amazon Studios winning the rights with a $10 million dollar plus bid.
-During the writing of the film, Dan Fogelman listened to Bob Dylan's album Time Out of Mind and in particular the song Love Sick, which opens the film. Written after the divorce of the singer of his second wife, this double album, dating from 1997, speaks of love and mourning with melancholy.
During a scene in bed with his wife, Will (Oscar Isaac) references Chewbacca. Isaac is, of course, better known for his appearances in Star Wars: Episode VII - The Force Awakens (2015) and Star Wars: Episode VIII - The Last Jedi (2017).