Fully aware that they most likely aren’t going to end up together but they look good together and have good chemistry whereas LiLi and her current boyfriend do not. Seems to just be food, alcohol and sex to him. 

Just a guess as haven’t read the novel. Guessing LiLi’s boyfriend’s secret is revealed and she confides in Su Zhi Zhou 

 carolinacdramalover:

I am a little surprised LiLi and Su Zhi Zhou are not end game. I am on episode 18 and the show is doing a good job of making me wish they were.

Feeling the same. 

For me I’m on episode 27 so I won’t spoil it for you but I don’t think it’ll happens anymore. 
hopefully Su Zhi Zhou will have another love interest in the form of the new girl at xingcheng