Too many great breakup songs to choose from, but my vote for "kissoff after breakup" song could be "I'm Not Angry" by Elvis Costello...
"There's no such thing as an Original Sin"

__________________
Plug me into somethin'

If the theory does not conform to the facts, then the facts must be discarded.

No good deed ever goes unpunished

Never argue with an idiot. He'll drag you down to his level, & beat you with experience.