This document is a compare and contrast essay analyzing the films 500 Days of Summer and The Fault in Our Stars. The essay discusses four key differences between the films: their main themes (idealism vs. realism vs realities of terminal cancer), the personalities of the main characters (Summer is selfish vs Hazel is selfless), the endings of their love stories (sad vs bittersweet), and the lessons learned (knowing reality from fantasy vs living in the moment). The essay provides analysis and examples to support each of the four points of contrast between the two films.