Desperate? Take a number sister and join the club. We have secret handshakes and decoder rings and everything! LOL
As much as I know there is an abiding 'love' between Aang and Katara I would agree with another poster and say I don't think the love they share may necessarily lead to a 'ride off into the sunset' type relationship.
The heros and heroines of epic tales rarely get to enjoy a normal life or have normal relationships like regular people.
Take Frodo and Sam in LOTR. (Lord of the Rings) Sam went back to the shire after facing the Middle Earth's version of the 'Fire Lord' but Frodo couldn't go back. He was changed and never the same again having gone through the whole 'destroy the ring' quest. A life in the shire with a wife and a couple of hobbit kids was not going to happen for him like it could for Sam. Frodo was different and could never go back.
Aang is a monk and he is the avatar. It may be that no matter how much he wants a love relationship with Katara, his path may in fact lead him in an entirely different direction whether he likes it or not.
I do have to say as well that homopatheic healer 'Song' in a previous episode tried to touch Zuko's scar but he stopped her rather abruptly.
Katara is the ONLY person who Zuko has allowed that close to him and to touch him so intimately. Very interesting indeed.