There's a somewhat sad look, that he enjoyed being her guardian. Her Angel, so to speak.

"I know." There's only the tiniest hint of pain and gives a tiny hand squeeze but it's hard to feel the love but it's obvious that's what the gesture was meant to mean.

He wants to ask 'why' she needs him but it's his fault. That he knows - just as it's his own fault for needing her, or Martha, or Jack or Donna. Or The Master.

"You still want to have me - even like this?" His brown eyes unblinking and staring into her soul, that seem cold and as vast as space itself.