(1 year following the ending of the War...)

Dear Zuko,

Have you heard anything from anyone else yet? I haven't talked to anyone in a while, not even Aang, if you hear anything from them please tell me

                                                                                                                 Sincerly,
                                                                                                                  Katara

(6 months later)

Dear Katara,

I am sorry I have not written back to you in so long, mail can get lost sometimes, and I have been busy, to answer your question, I have not heard word from Aang since a year and a half ago
                     
                                                                                                                 Sincerly,
                                                                                                                  Zuko

(1 year later)

Dear Zuko,

I wanted to let you know that I have spoken to Aang since you last wrote me, I am worried about him though...
         
                                                                                                               Sincerly,
                                                                                                                Katara

(3 months later)

Dear Katara,

Why are you worried about Aang? Is something wrong with him?

                                                                                                               Sincerly,
                                                                                                                  Zuko

(6 months later)

Dear Zuko,

Nothing is wrong with Aang, he just still had feelings for me, I was just worry about his well being, I wanted to be sure he was okay, but then he left the South Pole

                                                                                                               Sincerly,
                                                                                                                Katara

(3 months later)

Dear Katara,

Well, he will half to let it go eventually though, I feel sorry for him though

                                                                                                                 Sincerly,
                                                                                                                   Zuko

(3 months later)

Dear Zuko,

Why?

                                                                                                                   Sincerly,
                                                                                                                    Katara

(6 months later)

Dear Katara,

Because you are someone that's not worth losing

                                                                                                               Sincerly,
                                                                                                                Zuko

(3 months later)

Dear Zuko,

Do you have feelings for me too?
                     
                                                                                                               Sincerly,
                                                                                                                Katara