See that's the thing. That was his intent, but he quickly changed his tune and then championed her to join the team. I just think it is little cliche that the guy that treats the girl like crap always ends up with her. It has been done to death and you know it is coming as soon it starts to happen. I think it would be refreshing for her to not end up with either one of them to be honest, and maybe not end up with anyone.
And I doubt it will be, but I'm just gonna go out a limb now in case I turn out to be right, and say that our bad guy is in fact Aang, who isn't really dead, and has gone all "street preacher" ala Paul Atredies.