[All Robert wants is the reassurance that he's not breaking, because he doesn't understand his own body anymore and he's afraid.]

... C-Could... could you tell me... m-more about this, or... [His voice wavers then, hesitantly:] ... i-is it... not something you can... e-explain...?

...

... You... do not... n-need to tell me, I just... I do not w-want to cause problems...

[But he wants to know, too. He wants to know what's happening to his body.]