15 Lessons Movies Can Teach Us About Cheating

Lesson: Your spouse knows when something's up.

We can't really blame Connie (Diane Lane, again) for cheating on her husband and banging Paul (Olivier Martinez). But her husband (Richard Gere) can definitely tell she's acting strange and hires someone to follow her, and things just get worse from there. Which leads to another lesson: do not underestimate the rage that cheating can inspire in the jilted spouse.