I usually like this trope where the ML or FL gets together with the other lead for revenge, however most of them fail to hold these characters accountable for the way they treated the person they supposedly loved. (Korean Drama: The Innocent man: is another example of this trope) And that is what happened with William Chan character Shi Yue as well.

The ML was in a situation where he had to be chummy with his ex who is this uber powerful older woman who doesn't really care about what the ML wants and just wants to control him. So, when this woman comes back in his life, he doesn't really put up a lot of fight in trusting his relationship with the FL and doesn't have any faith in her either. He decides to play the game with the ex and be cruel to the FL. Honestly his game had no purpose at all, in the end, he gave it up anyway.

In other situations I would have termed the FL as a doormat, but this FL was anything but that. She was just a great character to watch, she tried very hard to put faith in ML when he didn't deserve it. She is the who held on so that their relationship could work. She didn't react blindly but thought logically everytime she discovered something new.

The acting was brilliant. I wish the drama had been shorter, as it would have cut the FL's suffering in half at least.