A 1991 film starring Kevin Bacon and Elizabeth Perkins. It's about two characters interpretations of life and falling in love.
More importantly, this phrase emphasizes the fact that there are often two sides to every story, especially where emotions are concerned. Both people may be telling the truth, but they tell it as they've seen it and most often they've already interpreted everything in their minds. Maybe he used a phrase that has certain connotations for her, or her tone of voice didn't sound sincere to him. These things will be reflected in how they tell the story later.