Not all screen romance is comedy. Melodrama — from Casablanca to The Notebook — uses romance to explore sacrifice, loss, and impossible choices. The lovers in Casablanca cannot be together because the world is at war. This raises the emotional stakes beyond personal happiness to moral territory.

Douglas Sirk's 1950s melodramas used saturated color and heightened emotion to explore what could not be said directly in that era — interracial desire, class barriers, the suffocation of suburban life. The excessive style was not a flaw. It was the only way to express emotions that realism would have been forced to suppress.