The unpleasant things between them started because of her mother. She said, in China, same sex relationship could not lead to happiness. Sounds cliche, right? How about Japan? Same. I think I will prefer Thailand than those countries.
I'm completely disheartened after chapter 3 or 4, if I'm not mistaken, because she changed her sexual orientation. I'm not interested in this story anymore.
If this manga doesn't have the good (yuri) ending, I will consider it as one of the worst (supposed to be) yuri manga I have ever read. But right now, it hasn't ended yet and I'm still waiting.