A Comparison
a) Jean Cocteau's "Orphée". Where the Princess of Death has to return to her territory, and the poet Orphée to his own.
b) Audrey Hepburn and Gregory Peck in "Roman Holiday". Where the runaway princess has to return to her royal confines, and the commoner journalist to his own.
Both filmed in black and white. In post-WWII cities.
Yet, Roman Holiday rings the more optimistic. It is suffused with innocence. And people perform their duties uncomplainingly.