Lyric discussion by getaccused 

Cover art for Letter from an Occupant lyrics by New Pornographers, The

Based on some lines, I get the impression that it's a break up song. Cliche, yes, but look:

"I'm told the eventual downfall is just a bill from the restaurant You told me I could order the moon, babe Just as long as as I shoot what I want. "

The breakup ("eventual downfall") is caused by something trivial ("just a bill from the restaurant").

"You traded me away long gone" obviously says "you dumped me."

and the line "Where have all sensations gone?" basically says "What happened to this relationship?"