Lyric discussion by YourBestNightmare17 

Cover art for Dead Man in My Bed lyrics by Nick Cave and the Bad Seeds

In my opinion, the song is about a partnership in which the love has faded away, at least the man's feelings for the woman. She seems to suffer under his cold-heartedness and feels alienated from him. I think the claim that she's not speaking metaphorically is a typical Cave-joke.

I'm sorry for possible mistakes, English isn't my mother tongue and I'm mutch better at understanding it than writing in English myself ;)

My Interpretation