And apparently this is the only time in eternity his wish comes true. As he lies in his own blood, praying for her soul, he doesn't have the strength to laugh, but it's a close thing.

Still she believed him.

She believed and protected him, when all the world turned against him, and now it's his time to do the same.

And if asked he would say, he hates being in debt, and that's true. But he is the devil, and he learned long ago that not lying isn't the same as telling the truth. Owning his life to a human is the last thing in his mind in that moment.

Because all the time in hell, and all the memories of heaven, of pain and betrayal, never taught him how to love in moderation. He loves the way he punishes (the way he sang once upon a time), with all his burning soul and blazing eyes and passion to fuel the stars.

And there isn't anything on Earth he loves more than the Detective.