It's something about the inevitability. How nothing can keep them apart--not her selfishness, or his evil, or even death, in the end...their love is their only redeeming quality.

As long as she wants me, I’m here.

I didn’t realize I was crying until it was time to say the blinding words. ‘I do,’ I managed to choke out in a nearly unintelligible whisper... When it was his turn to speak, the words rang clear and victorious. ‘I do,’ he vowed.

If he'd done something to harm her, I would annihilate him.

Surely it was a good way to die, in the place of someone else, someone I loved.

Well, I'm so sorry that I can't be the right kind of monster for you, Bella.

Lie to me. she whispered. I love you. he said.