The War Between Men and Women

The War Between Men and Women is a 1972 slapstick livecartoon comedy film starring Jack Lemmon, Barbara Harris, and Jason Robards.

Peter Wilson Jack Lemmon is a sarcastic nearsighted cartoonist, author and swinging bachelor living in Manhattan. He detests dogs and children. He is flustered by womens priorities and avoids commitment, much preferring transient physical relationships. At the office of his eye surgeon, Peter meets a leggy, eyecatching brunette named Terri Kozlenko Barbara Harris. He likes her very much, but discovers later that she is a single mother to three children.Nevertheless, they develop a close friendship that grows into romance, when Peter realizes that Terri is the only woman who can tolerate his strong antifeminist opinions. When she rejects his plan of a sexual relationship conducted exclusively at his bachelor pad so that he doesnt have to bond with her demanding family, he reluctantly proposes to her. They get married and he moves into her apartment, but her rogue exhusband Stephen Jason Robards appears to spend more time with their children. Stephen and Peter clash at first, but they soon become good drinking friends, much to Terris disapproval. ........

Source: Wikipedia