A character misses thier Arch Enemy
Without your schemes my life it seems is empty,When a Arch-Enemy (or sometimes rival) is either successfully defeated, killed or quit on them; one or both of the characters feels sad to have them gone. This is often looped with Victory Is Boring and serves as a form of Foe Yay. Usually played for comedic effect, but not always.
I spent all my time keeping you from doing wrong
You were my only nemesis
I'd foil your plans, but still I miss
The moments when we didn't get along.
When We Didn't Get Along, Phineas and Ferb