Quotes / One True Love

In the instant that you love someone
In the second that the hammer hits
Reality runs up your spine
And the pieces finally fit
You're all I've ever needed
Baby you're the one
Elton John, The one''

Their bond. No matter what reality I visited, no matter what world I went to, no matter how many times she hurt him and in turn he hurt her back, they remained bonded by an inexplicable force that I later discovered to be destiny. Fate you can change and play with, but destiny? Impossible.
It's not a matter of them being soul mates; it is far simpler than that. They are the same, two different pieces of the same cloth, they are one, and no matter how much the world, their lives, parents and circumstances drive them to hate each other, their bond will always remain the same. They are one.
Rei talking about Shinji and Asuka, Scar Tissue, chapter 12

Lily: What's a soulmate?
Dawn: It's a.. Well, it's like a best friend, but more. It's the one person in the world that knows you better than anyone else. It's someone who makes you a better person, well, actually they don't make you a better person... you do that yourself— because they inspire you. A soulmate is someone who you carry with you forever. It's the one person who knew you, and accepted you, and believed in you before anyone else did or when no one else would. And no matter what happens.. you'll always love them.

Soulmates arenít rare, they arenít, youíll meet a thousand soulmates, just as youíll live a thousand lives.

North Stars though, they are. By chance youíll meet someone who encompass the way home. Someone who is home. And knowing them is like being found with never knowing you were lost.

And you will love them. God, you will love them as they are because they are yours. They exist beneath your skin, in your veins, to your bones. They were written in some far off past life.

There is no force that is more than they are.

You are born half in love with them, and to have them, to be theirs, is like nothing else. Nothing would dare to be.