In Episode 13 of Coffee Cat Mama, Ah Yum (Vincent Wong) confronts So Mei (Nancy Wu), asking why their friendship story turned into a game concept.
Ah Yum and So Mei met when they were in daycare. Since then, they became best friends. So Mei initially wanted to learn how to knit, and dragged Ah Yum to learn as well, But, Ah Yum soon fell in love with knitting, while So Mei lost interest. So Mei would ask Ah Yum to help her knit things, whether they were scarves, sweaters, or wraps. Starting from Form 7 of high school, So Mei knew that Ah Yum had a crush on her, but she didn’t say anything and chose to ignore his feelings.
One year, they went to the wishing tree to wish upon things. Ah Yum’s wish was for So Mei to be his girlfriend. Although So Mei probably knew what he was wishing for, she still said she hoped his wish would come true.
When Ah Yum found out that So Mei was dating an upperclassman in college, he tried to drink himself to drunk, but So Mei found him and asked him what was wrong. He told her he liked a girl, but she liked someone else. Although So Mei knew he was talking about her, she just ignored the fact and comforted him as if she didn’t knew. Ah Yum was very afraid that she would find out he had a crush on her. He thought that being able to care and support someone he secretly liked could still be a blessing.
When Ah Yum found out three years ago that So Mei was going to marry Mr. Bean, he choked while eating. He tried to tell her that his divorce was indirectly caused by her and that he has two daughters, but she insisted. And during their heated argument, she went on to say that Mr. Bean was stable and mature, unlike him. After Ah Yum told So Mei’s mother, the two ended their friendship. And for two years, So Mei did not call or talk to him.
They rekindled their friendship after encountering each other at Leslie Cheung’s 10th anniversary commemoration, a common idol they had shared. So Mei promised that they could go back to being best friends if he swore under Leslie’s witness that they would only remain friends, and never fall in love with one another.