When Juliet finds Nick, her boyfriend, in this game, the first thing she does is chainsaw his head off and wear it on her belt like a Tamagatchi. She's a great girlfriend.
But yes, that boyfriend is still alive as a head and she's trying to find a way to bring back the rest of him with magic or something. I don't know, the game was too crappy to finish. But hey, that means that the girlfriend gets to be the protagonist for once! Now the girl is the one slaying zombie hordes by the bushel while the guy is a literal helpless hanger-on. He's pretty depressed and weirded-out at the whole experience, but he should be more grateful: she managed to save 1/7th of him, after all.