[He would never admit to being scared (not to Korra, at least), but he's definitely unsure about what he should do or what he should be acting on: emotion or logic.

Hearing the truth from Korra makes the decision for him. He leaves Naga to give Korra a crushing hug.]

You wouldn't have done that without the curse, not to anyone. I don't believe you're a killer.

[Says the kid who is friends with two known killers, but this is slightly more personal. He wants to add that he forgives her and that he trusts that she won't hurt him in the future. It only takes a moment of introspection to realize that only one of those things is true.]

And I forgive you, if that is important.