He's still trying to figure you out, okay? And if he were honest, it freaks him out that you exist. That there's so many parallels between their lives that he doesn't get. He wants to know more. Curiosity. But that would mean returning back to finish the session.

Oh, of course Dirk can swim. Now this is even weirder. What is he supposed to say if the other asks? Well...huh. That's a lot more complicated now that he thinks about it. The other doesn't know how to sign. He can't speak. Wow, this is basically the most awkward swim ever.