The opening title and synopsys sold this as a sweet, romantinc BL drama. It is NOT!
I gave this a 7.5 because it is a well done series, the actors, direction and cinematography is great. It would work as a cautionary tale, if the ending would be different.
This series is basically Gu Hai sexually assaulting Louyin every chance he gets. He is a sick guy, even if he comes across as sweet and caring sometimes. He is obsessive, aggressive with everyone, overreacts, and hates Louyin's friends and he's rude to them on purpose (which is a red flag in itself).
He gets what he wants in the end, but I am not sure it's a happy ending and not sure this needs a second season (unless it's a very dark one, but I am sure the fans don't need that).
To me, this looked like the type of relationship that gets you killed if you want out. By the 10th episode, it got hard to watch. We really need to stop romanticizing abuse.