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Well good. I don't think I want you watching over my home sector anyway.
[He's implying you're not trustworthy, but then... he doesn't trust the DF to begin with. Double whammy there. Sorry Korra. Really though, this is how a lot of his relationships start out, insults, badgering and the occasional moment of getting along... until those occasional moments become more often and you can't help but realize the sweet side of him exists.
And then you're trapped forever and can't seem to really ever hate him for being a little jerk once and a while.]