Vae's feed

While we wait I'd like to ask you about smth. In chapter 60 when they're talking in the bed and Nok says he'll spend the winter outside the palace, there're 2 paneles with shoked Jaeshin and him getting up, wanting (and begining) to ask about smth with anxiety.
So I was wondering WHAT has made him that anxious? I conjecture (after a long cogitation) he's scared Nok will say he wants to end their agreement. "i'll be away, we won't be seeing each other for a few months."
Am I right? Or could it be smth else?