[Oh, yes. That’s guilt. Lots and lots of guilt that he wasn’t quite expecting, and if the Doctor had a tail he’d probably be tucking it between his legs right now.] I…
[He doesn’t quite know what to say for a change, so he just turns away, wringing his hands together in an awkward, nervous fashion and desperately wishing he had some controls to fiddle with.] …I’m not- I’m not… trying to be funny.