[The last thing he wants is to deceive Felix. At that expression the Doctor puts down his cup and makes an apologetic sigh. Elbows and forearms on the table, he leans forward, his own expression sincere.]

Quite possibly as in an actually, yes. Not a lot of people know, in fact you're the second. For his - my - valid reasons he would prefer it that way and while I agree I don't completely agree, not where my friends are concerned.

Besides, you figured it all out on your own and I didn't doubt for a second that you would. Which is why I bring it up with you now.