[ Byerly's wry smile shows quite clearly that he's thinking the exact same thing. But he doesn't call his beloved out on that, because it's sweet. And because he wants to be talked into it. ]

I wouldn't be doing it for you.

[ It does feel important to assuage that worry. Even if it's not entirely true. It's at least a little bit for him. ]

I would be doing it for myself. To hold onto you, if nothing else. You must be getting so bored, and a bit of travel would spice that up and keep your eye on me, eh?

[ That is, for what it's worth, a total joke. Of Byerly's many insecurities, he doesn't actually worry about losing Bastien's heart. (He doesn't even obliquely worry that Bastien is faking this relationship as part of a Bardly mission any longer. That's actually totally gone.) ]