He Said, She Said (1991) on Netflix

The wolf journalist Dan Hanson is disputing a column in the newspaper Baltimore with his colleague Lorie Bryer. The editors decide to divide the column between them increasing their rivalry. They are invited by the television producer Wally Thurman to have their own show called "He Said, She Said", where they present opposing opinions in different subjects. Meanwhile they fall in love for each other and decide to live together. Three years later, Lorie wishes to marry Dan that refuses and they have a discussion and Lorie throws her mug on his forehead. When they tell their story to their friends, each one tells it in a different perspective.