Well, that is... [He sighs softly. He doesn't know how to put this, and he doesn't want Korra to feel anxious about things she hasn't lived yet. But he still aims to be as truthful as possible.]

We've through a lot, Korra. And we've come a long way since the time you first set foot on Air Temple Island. It's only natural that this would come with... um, some additional closeness.