[The nonchalant dry humor they're trying would have actually made him laugh by itself, this time, but not as much as their last remark does; a few escape him, almost sharp but still good humored. He hasn't been thanked for being with someone before.]

If that's how it is, it's only fair I thank you in return—just this once. For letting me share this with you.

[Despite all the mystery that surrounds them, intentionally and not, they've reached out to him in ways he couldn't have anticipated. He wonders when that started, really...]

I'm looking forward to that trying. Next time perhaps we can add something new.