Lyric discussion by opinionatedyam 

Cover art for Calm Like You lyrics by Last Shadow Puppets, The

I think it's mainly just describing that period when a relationship has turned stale and it's broken down to just arguments with disdain growing for each other daily: "I am craving heartbreak whilst you're making your demands," being the giveaway that unlike in Mardy Bum, Turner doesn't care anymore.

My Interpretation