[ Where does he think he's going? What does she think she's doing following him?

It's a thought that crosses his mind, but he doesn't actually care enough to stop her. He just keeps walking. ]

Well, we haven't turned blue in the face and suffocated yet so it's at least possible, no?

[ Always thinking about the most cheerful alternative, that's him! ]

Doesn't make sense to just stand around and wait for something to happen, anyways.