Someone to Watch Over Me
Tom Berenger is a working-class cop happily married to Lorraine Bracco. Mimi Rogers is an extremely rich woman who witnesses the murder of a wealthy man by a mob boss. Her life isn’t worth a nickel if the boss can get to her before she can testify against him. Tom is assigned to her round-the-clock protection detail. He and other cops virtually move in with her in her jaw-droppingly awesome apartment. They are all suitably impressed, but only Tom starts an affair with her.
You know the relationship is doomed. I kept telling him to keep it zipped, it can only end in tears. Nobody is really a bad person here. Ridley Scott seems mostly interested in showing the class differences, though there is a fairly good thriller story going on, too.