I think I know what you mean. I used to be mildly afraid of the dark. Now I much prefer it to artificial light.

[He shrugs, but Merlin's quick to follow it with a shake of his head.]

You're not interrupting at all. You're welcome to join me. Or I could walk with you? Unless of course you wanted to be alone.

[And he finds himself hoping that she doesn't, realizing then that he's sort of lonely himself.]