[ for the first time in this conversation, rex raises his voice ]

I don't care that Susato got away! Not anymore, anyway.

And I know what you did. I heard you, back there. But you would've done that whether I was alive or dead. Whether you cared or knew I existed at all. Spike didn't kill for Sheba, and you didn't close those windows for me.

So what proof do I have that you actually care, and aren't just saying it?