[Yep, Hiro sure has no idea what he's doing, and the face he made hearing "relationship" hammers that in a little more. Naoki's not actually going to say that he also wasn't certain from the beginning, but he does think it.]

I'm sure you were gonna anyway, but make sure to talk and listen to each other. [...] That's less ground rules than advice, though. It's easier to figure things out when you're on the same page. Nothing wrong with you guys deciding yourselves what dating is for you.

[YANG'S THE ONE WITH THE RULES, Naoki's along for the ride.]