Never told you about? I remember it plain as day from our first meeting. You were decidedly unimpressed. [Implying that they didn't get off on the right foot, but things got better.] ...Then again, this is the same sort of confusion I have been getting all day from people.

[This is subtly implying that he's been confused most of the day as well, though he will not openly admit to it.]

As for your change... it is very unexpected. I suppose it comes from knowing you in your other form for much longer.