"I'd rather die tomorrow than live a hundred years without knowing you." - John Smith
Okay, so I don't think we should all die if we can't be with the one we love (seriously bad advice, it only works in their situation!) but I love the sentiment of this one: that life wouldn't be the same without that special someone. Once you meet them, you know that things have utterly and irreversibly shifted, and that's just part of what love is.