Humans cannot be trusted, and they can never be forgiven... [maybe it's hypocritical to fault her for trusting a human when he himself is relying on one right now...but that's different. It's just different, because he's terrified of opening up to her even just a crack. He just has no other choice...]

If you understood, you wouldn't let a filthy human anywhere near you. [His heart is breaking underneath his own words. He knows the feeling too well. If she understood... There's nothing full about if - it's an empty hope.]