Real
Location: Under Your Skin
But u have to keep in mind that Katara and Aang's storyline was able to develop in over 4 seasons.what romance? none of the supposed couples have any chemistry. its just staged because their viewers demand it. at least Aang and Katara were believable and it wasn't forced all in your face.
Korra and Mako was crammed into one season b/c it was suppose to be the only season.