The War Of The Roses (1989)

A student (Michael Douglas) at Harvard Law School meets a young woman (Kathleen Turner) on a rainy day in Nantucket and they fall in love and get married. But after 18 years of marriage and two children, their relationship has literally turned deadly and even a divorce can't stop the hate. Based on the novel by Warren Adler and directed by Danny DeVito (who plays a family friend in the film). This (very) black comedy examines how love can turn to hate and when revenge becomes so important that one crosses the line into derangement. It's amusing at first but it quickly turns ugly and you can't laugh anymore. These people are insane! But one can't help but admire the film's tenacity in going full throttle, angry and remorseless, to its decidedly grim finale rather than a happier resolution that might have been more palatable to audiences. With Sean Astin, Marianne Sagebrecht, Peter Donat and G.D. Spradlin.