Zutara-meter..that sounds like some bizarre device that you buy in a novelty shop, and it, like, has a pictutre of the Zutara hug on one side, and the DoBS kiss on the other, and when something Zutaresque happens, it starts making PING noises.

..I blame the heat.

Agreed, and that is exactly what I was attempting(and probably failing) to say, that their moving away from eachother is a normal sign of humiliation, and not indicative of..really anything.

I still think the expression on Zuko in the Kataang handshake may mean something, but it could also be anger and apprehension because of how godawful the play was.