Hey Tan,
Haven't heard of you in a long time.. Well, either I haven't been in contact with you in long time. I guess it's a signal that the thing we had is over. Time difference, work, cultural differences, language barrier and lack of time have all had influence for this situation.
I will be going to Korea on August and I will be honest with you: I might meet a Korean girl while staying there. As I am still young, I want to enjoy my trips without feeling of cheating anybody. So I want you to enjoy do the same: feel free to meet a new guy and move forward with your life.
Yours,
Simo