I was broken hearted also at the way Jo Jo was so uncaring of the torment she put Sun oh through and still can’t understand why she chose the one she did other than she said he was warm and kind. Sun oh always loved and cared for her too and they seemed to have great chemistry! I guess the emotional drama created by others because of Sun oh’s status was too much for Jo Jo to deal with. I had hoped they could find their way back to each other, but Jo Jo didn’t even try and just kept running away from Sun oh. Furthermore, Sun oh was never given a clear reason her feelings changed for him, making it so hard for him to understand and have closure. It was a very disappointing ending to me.