Don't presume to know everything about me water-tribe peasant. You know nothing about me- and my motives for wanting to do what I did! It wasn't an easy decision like you make it sound, and I'm obviously still living with the repercussions of what I can actually admit to having been a horrible mistake.
You're not the only one that was hurt by my decision either. So stop feeding me all your sanctimonious bull crap Katara, I'm sick of you making this seem like such a personal thing. I was your friend for less than 5 minutes, and your enemy for months longer. It can't have hurt you as much as you pretend it does. Be angry at me on Aang's behalf, on that of the world- but stop acting like you were some pretty-little lovesick girl that got cheated on by her boyfriend.
And for the record, no I did not return just to make your life miserable. Don't be so self-centered. I returned because I new I could help and because someone had to teach Aang firebending. I returned, because like you I want to put an end to this war- and Lord Ozai.