If you've never done anything you think is wrong, Musket, you're an unusually happy man. That's assuming you're not a psychopath, which I do.
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Forgiveness, as has been said, is something you do for something that's been done to you. I suppose that includes the indirect hurt that's been caused, so you might be able to forgive someone who had hurt a friend for the pain that caused you, but you wouldn't have the right to forgive on behalf of the friend.