Funnily enough, I don't actually see this as a "bad relationship" as such - at least, it's not bad between them.
I sort of see this as him talking to a girl, and they've both been through hell, and at times it seems like it would have been easier to give up, but he refuses to let go. He doesn't want to face the dark without her, either the worst bit to come, or just the normal darkness that happens in everybody's lives, because she matters too much to him.
But I also see how death can come into it - either she's dying and he wants to die, too, so they won't die separately or alone, or he's dying, and he wants her to stay with him so that he doesn't have to die alone (as in, he wants her to be ther when he dies, not he wants to kill her so they can die together).
Funnily enough, I don't actually see this as a "bad relationship" as such - at least, it's not bad between them.
I sort of see this as him talking to a girl, and they've both been through hell, and at times it seems like it would have been easier to give up, but he refuses to let go. He doesn't want to face the dark without her, either the worst bit to come, or just the normal darkness that happens in everybody's lives, because she matters too much to him.
But I also see how death can come into it - either she's dying and he wants to die, too, so they won't die separately or alone, or he's dying, and he wants her to stay with him so that he doesn't have to die alone (as in, he wants her to be ther when he dies, not he wants to kill her so they can die together).