Lyric discussion by 7Ethan7 

Cover art for The Unfaithful lyrics by Memphis May Fire

Well I think this one is pretty easy. This is about some kind of long term relationship where one cheats on the other. The song is about the lies that were told and the betrayal that he felt. And he seems to feel kind of relieved that it is all over finally.

or marriage "for better or for worse, It never meant a thing"