Mit dir geteilt
During the first dinner scene with Mary Fisher, her mother, Bob, and his kids, Mary's mother reveals that Mary is really 41 years old when Mary herself claimed to be 34. (Meryl Streep) herself was actually 39 when filming of Die Teufelin (1989) began, and turned 40 on June 22nd, 1989, during the film's production.
Actress Meryl Streep was considered for the "She-Devil" character. But due to some conceptual similarity with Streep's then previous picture Ein Schrei in der Dunkelheit (1988), Streep decided to portray romance novelist Mary Fisher instead.
The movie was filmed in New York in the spring and summer 1989, which was during the first season break of Roseanne Barr's popular ABC television sitcom Roseanne (1988)
Before doing this movie, actress Meryl Streep was criticized and questioned as to whether she could do comedy.
Director Susan Seidelman reportedly didn't realise that a highly-regarded BBC adaptation had already been made of Fay Weldon's novel until she was well into production. (Edited 1 scene in between the car ride after the party when Ruth gets dropped off near her house when Bob drives Mary home)