Damn your oily hides, she's 12! Have you ever had a 12 year old with a crush on you? Didn't think so. 12 year old people are called SMALL CHILDREN! I look down on Aang's relationship with Katara for similar reasons (that, and the poor writing that revolves around them. Then again, Aang is, actually 112 years old). But, at least there Katara is the older, more mature one (that, and women choose. A sad fact of life for us men, but still a fact).
It is a cute little crush she has on one such as Sokka, but like 99% of all Avatar ships, it has been blown grossly out of proportion!