Why we must oxidise

We're terribly asunder, aren't we?
God, Naina, I have no idea what you mean, but I'd really like to get home and shower. My skin's rubbed with the smell of beach.

You know what's happening to our relationship, don't you? It's oxidising.
Why on earth would it oxidise, Naina?
Because that's what relationships do. They oxidise, go black about the edges and start to smell like blood.

Why do relationships do that?
Because it's the only way they can breathe.