The movie that Pierce Brosnan is watching in the movie theater is actually 1951's "Pandora and the Flying Dutchman" starring Ava Gardner and James Mason. There is a visible "Pandora and the Flying Dutchman" movie poster behind Pierce Brosnan as he makes a telephone call in the lobby of the theater. "Pandora and the Flying Dutchman" is in color whereas "East Side, West Side" was in black and white. "Pandora" was made two years after the setting of "Married Life" which starts in 1949.
Chris Cooper and Pierce Brosnan would act together again in Remember Me (2010).
Pierce Brosnan and Rachel McAdams would later reunite in Eurovision Song Contest: The Story of Fire Saga(2020).