Lyric discussion by Crane42 

Cover art for Caligulove lyrics by Them Crooked Vultures

I think it's about a guy who gets offered as a sacrifice to 'the gods' long ago, and comes back as some sort of undead creature who falls in love with some girl.

"in the temple/i was an offering/and was reborn"

"when the heartless hears a heartbeat/he's jealous"