Lyric discussion by Aethios 

Vampire reference may be to another man... a guy that came between the relationship in some way.

"There is no body innocent here/ I've got more blood on my hands than you do" -this could very well be an admission. Things happen and neither of them is innocent in the relationship.

Actually, I believe it to be literal. I think that's a strength of the song. He is actually talking about a vampire. The song is a story, and it wouldn't be the first time he's used those particular themes as such. If it's a metaphor it's a bad one. The second part I agree with you about though. It's a pure admission that they both do terrible things. The song is eerie and the imagery is gothic and haunted. The metaphors are crafted to fit perfectly, the ghost in the attic, etc.

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