I think it's closer to a contract at this point. Like, if you see me unwittingly standing under mistletoe, then you come over so no one else surprises me.

[Vanya assumes, because it's simpler, that this is not flirting. This is just joking, right? He has no reason to flirt with her because, well, look at him. And besides, it's easier if she doesn't just start second guessing every little thing.]

Seems like an okay deal to me, but I don't know what you're getting out of it.