Zutara (zuko+Katara)
pros
-opposites attract
-*spolier* when jun kept saying "so this is your girlfriend?" he never deny it
-both teens(age)
-zuko has a scar...katara can heal things


-some fortuneteller said katara would marry a powerful bender

cons
-they enemies!
-sokka wouldn't allow it
-zuko is too obsessed over the avatar to be in a relationship
-he ties her to a tree!

Kataang ( aang+katara)
pros
-aang has a crush on katara
-hugging moments between them

-both have good personalites
cons
-fortuneteller told aang their was no love in his life
-aang is to young for Katara
-katara is a more motherly figure towards aang