Actually I think it's just Zuko and Mai. In the episode where zuko joins the team his opening line is "hey, zuko here" when Sokka told zuko about Yue his response was "that's rough buddy" the whole "honor" bit is definitely zuko. Next one is zuko trying to give Sokka advice when they were in the prison, then the joke one is when they were all sitting around a campfire in the upside down air temple and the last one is from when Mai and zuko were being all lovey dovey and she said that she wanted a fruit tart with rose petals. I don't think the "or I'll have you banished" part needs to be explained if you have already seen what Mai is is like.

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...HOW DID I HAVE ALL OF THAT MENORIZED?!?!?!?!?!