[He knows, which is why he was so hesitant to say that... although he still doesn't quite understand how it would be offensive. It is literally something he doesn't understand - as much as that makes him feel mildly bad - and... well, how would it be offensive to explain something he doesn't understand?

... still.]

... I am uncertain. Other than me... l-learning the cues... which is, well, d-difficult.

...

I have to... to d-do so consciously. I have to... think about it. A-Analyze situations. [It has to run in the back of his mind, like a scanner working in the background, and that gets mentally exhausting sometimes.]