Responses
Where does it show that she's his ex??
It doesn't.. Just a few hint maybe
1.moon crystal.. Moon is teasoo family name
2.she's kinda ok with the office relationship thingy
i knew it would be to much of a coincidence to make her taesoo's ex! and she does GENUINELY like Joonhyuk and just wants to make a good impression on his family, but she doubts that a well off family like that will welcome someone like her...