He nods, happily. "She's cool. But we're just friends," he adds hurriedly, in case his older self gets the wrong idea.

Shifty eyes.

"...I mean, uhm, so far. It's ... not like I have, you know, good luck. With ... girls."

It's not a confession if you're only telling yourself. And the older Sokka is cool and knows stuff, and seems to have girls falling all over him, so he can help, right?