Why did Chiu Man-Cheuk and Anita Mui break up?

I have read some materials that an actress Wu Moumou deliberately approached Chiu Man-Cheuk. I remember those materials that she once deliberately flirted with Chiu Man-Cheuk on the plane, which led to misunderstanding in Anita Mui, so she broke up. Later, Anita Mui and Chiu Man-Cheuk both publicly said that they broke up because of a misunderstanding. But they didn't say what the misunderstanding was. Anita Mui said that if it weren't for the misunderstanding, she would have been Mrs Zhao. Chiu Man-Cheuk once said after getting drunk that he loved Anita Mui deeply. In 23, Anita Mui gave a concert a month before the last day, and Chiu Man-Cheuk also went to join in. They also hugged backstage. When Anita Mui died, Chiu Man-Cheuk wrote eight words: "Love of my life, have a good trip". It can be seen that they once loved each other deeply. However, there was a big gap between them at the beginning. Chiu Man-Cheuk had just made her debut, and Anita Mui was already a super big sister in the music world. Under the pressure of the outside media, she reported at random that Chiu Man-Cheuk was greedy for Anita Mui's money and that Chiu Man-Cheuk was dependent on Anita Mui, which made this relationship suffer many twists and turns. Many people don't think highly of their relationship, so they are doomed not to last long. These are all news from reading materials. If you really want to know the real reason why they broke up, I'm afraid you have to ask Chiu Man-Cheuk. Anita Mui was born for love, and she was also trapped by love all her life. How could she treat love as fun? Don't believe some people's nonsense.