15 Lessons Movies Can Teach Us About Cheating

Lesson: Clandestine sex can be super hot.

Like The End of the Affair (also starring Ralph Fiennes, also at peak hotness), this story plays out against a wartime background, which makes the trysts between Laszlo (Fiennes) and Katharine (Kristin Scott Thomas) super intense. What's more relatable is how the pair's encounters capture the passion of being in a new relationship — that phase when you just can't get enough of each other. The fact that their new-relationship phase is totally secret adds to the intensity.