Well one you see forming in the show could actually be a Sokka x Ty Lee. It's another weird good guy/bad gal pairing, but it could actually happen, unlike Zuko x Katara lol.
Ty Lee had just disabled Katara's bending and now left her to Mai. She charged Sokka and knocked him into the forest. Sokka expected to be killed but was utterly surprised when the girl bent down and started kissing him hard on the lips. It was kind of freaky for Sokka considering there was a knife by his throat though. Oh well!
The battle was obviously bad just beyond the trees, but Sokka and Ty Lee apparently didn't want to help out… They were already comfortable.