[Either Loki is far better at acting than he thinks he is-- and Thor thinks he's pretty good, but that he wouldn't generally bother for him-- or this is not the same Loki. He winces at the expression on Loki's face, sympathetic and a little less uncertain now, but nods.]

It is a complicated tale... and the Loki I saw last is... older. We will have much to discuss, but it must be after I arrive at this city. We should speak face to face and let there be no deception or confusion.

[He pauses, and after a beat adds,]

... it is good to see you, brother.