Around the time that the movie was released, Robert De Niro said of the teaming of Meryl Streep and him: "I was always thinking of something I could do with Meryl, a play, a film, anything. We had a reading and began to see possibilities in it." Meryl Streep added "We wanted something real, something awkward and crumpled."

Robert De Niro emphasized authenticity and attention to detail on the film. De Niro did this by having business cards made up for his character, even though they are never seen in the movie. Also, for the telephone conversation with his wife, De Niro got Writer Michael Cristofer to write dialogue for his spouse's part, even though it was not in the script, nor going to be heard by audiences.

After this, Director Ulu Grosbard did not make another movie until Georgia (1995).

Meryl Streep and Robert De Niro appeared in The Deer Hunter (1978) and Marvin's Room (1996).

On the subject of the darker more complex roles Robert De Niro had at the time recently performed, De Niro said of his character and acting method in this movie: "It only appeared to be easier. You always have to worry. You always have to concentrate. It's just more deceptive when you are working on the surface."

Debut feature film produced screenplay of Michael Cristofer. The script for this film first surfaced in Hollywood during the early 1980s.

The movie is considered to be a modern version of Brief Encounter (1945). Director Ulu Grosbard and Screenwriter Michael Cristofer screened the classic movie during production, and acknowledged that this movie, although it has similarities with the classic romance picture, was not a remake of it.

This movie was marketed on the strong star teaming of two Hollywood acting heavyweights. Film posters for the film featured the billing names of Meryl Streep and Robert De Niro in a sizable font size positioned above of large photograph of the two stars.

Jane Fonda and Jessica Lange were considered for the role of Molly Gilmore.

Three days and nights were spent filming at the Rizzoli Bookstore in Manhattan. The book shop was able to remain open for trading, and allow filming at the same time, due to the unique layout of the premises, where shooting could be conducted in one area, while other areas allowed customers to shop.

The casting of Meryl Streep and Robert De Niro was officially announced in the February 8, 1984 edition of The Hollywood Reporter.

Meryl Streep and Robert De Niro agreed to lower their up-front salaries retaining their back end box-office percentage points.

Paramount Pictures studio head Michael Eisner was not happy with the film's screenplay by Michael Cristofer, regardless of the star attachments of Robert De Niro and Meryl Streep. Eisner ordered a re-write, and conceded that a few scenes could be shot in New York City during the Christmas season. However, if the re-write did not meet his standards, the picture would be put into turnaround.

At the time that the film was released, Robert De Niro and Meryl Streep had won two Oscars. They had won a lead and supporting acting Oscar. Streep had won for Sophie's Choice (1982) (lead) and Kramer vs. Kramer (1979) (supporting), and De Niro had won for Raging Bull (1980) (lead) and The Godfather: Part II (1974) (supporting). Both had won their supporting acting Oscars first, followed by their lead acting Oscars. To buck the trend, many years later, in 2012, Streep won another Oscar for The Iron Lady (2011).

Second of two movies that Robert De Niro made with Ulu Grosbard. The other being True Confessions (1981).

Metro North Commuter Railroad changed its name several years ago, and is now simply known as Metro North Railroad.

Harvey Keitel and Robert De Niro appeared in Mean Streets (1973), Taxi Driver (1976), Cop Land (1997), and Little Fockers (2010).

Various film directors were sent the screenplay by Paramount Pictures executives which included Alan Alda, James Bridges, James L. Brooks, Taylor Hackford, Sidney Lumet, and Robert Redford.

The first draft of the movie's screenplay was finished in August 1983, but was considered by Paramount Pictures studio head Michael Eisner as being "sexless" and "too thin".

Several weeks of night shooting was spent at Grand Central Station in New York City. The production could only film in seven hour increments, and shoot only between rush hours.

Robert De Niro had the contractual power to shape this picture's story as his own "vehicle".

Robert De Niro had been searching for a movie project to re-team with Meryl Streep, and this movie was it.

Director Ulu Grosbard credited Robert De Niro and Meryl Streep "helping shape" and develop the movie's screenplay. For two months, Streep and De Niro met once a week to improvise scenes with Ulu Grosbard and Michael Cristofer so as to fix the film's script, which needed more work as at the time, as the film project was at risk of being put into turnaround.

Samples of Meryl Steep saying "What're you doing?" Can be heard in the Dream Theater song "The Mirror"

The place where Frank Raftis (Robert De Niro) and Molly Gilmore (Meryl Streep) met, was the commuter train line route between Manhattan, New York City and Westchester County, New York.

Producer Marvin Worth wanted Robert De Niro for the lead male role of Frank Raftis, because Worth "wanted a real, everyday person."

The movie is not a remake of Falling in Love (1934).

This project was turned down by Warner Brothers and 20th Century Fox before finally being made at Paramount Pictures.

Robert De Niro and Meryl Streep appeared in The Deer Hunter (1978).

The movie's closing credits declare that this picture was: "Filmed entirely on-location in New York and New Jersey, portions filmed at Empire Stages of New York, Long Island City, New York."

The film was released four years after the similarly titled film Falling in Love Again (1980).

Taylor Hackford, Jim Bridges, Jim Brooks, Sidney Lumet, Robert Redford, and Alan Alda were considered to direct.