THIS IS WHAT I POSTED IN RESPONSE TO THE MAI DISCUSSION:
Initally, I wasn't keen on Mai too.
She's dull. She's easily bored, even with what she seems to do best and that's killing people.
But I've started to like her. But not with Zuko.
See, Zuko is another bitter soul and he's changed a lot since when Mai liked him.
When Mai liked him, he could barely weild a knife, he fell on his butt while trying to firebend... and he was a sweet, innocent, bashful boy that always got the wrong side of Azula's teasing.
Which has made him and her into what they are today.
Zuko's quiet. So is Mai. There'd be nothing for them to discuss. What are they going to talk about Azula the whole time? I wouldn't think so.
Both Zuko and Mai need loud, friendly counterparts to keep the relationship going.
A bright side to their dark side.
Which is why I pair Zuko with Toph and Mai with Teo.
Teo is the type of boy Zuko was when Mai liked him. Cute, innocent, generally optimistic.
However Zuko has become a hateful pessimist due to Azula, and Mai has too. Mai needs an optimist like Ty Lee to keep her... alive.
Zuko and Mai are alike... but that's what doesn't work. Look at Jin. If she wasn't bold and brash, she would have never gotten a date with Zuko. Mai and Zuko could never get together BECAUSE they're too alike.
That's what I think.
Here's my Teo/Mai fic. See if you change your mind...http://www.fanfiction.net/s/3202284/1/