Responses
It doesn’t feel fast to me, the story is focusing on how Yunho feels and right now we can see that he is not yet « in love or crushing » on Tiger daddy. He is going through soo much emotions like loss from his family, the realisation that his first love will remain unrequited and yet he still said « im going to try to get closer to him from now on ». This shows that he will take time to heal his heart before being able to love someone else.

Yunho obsesses over a guy for 10 years, a new guy comes into the scene and he suddenly has a crush on him? I think the romance is going too fast...? It would suit this story better if the pacing was like The sound of your voice's, even more when the mc has such a sad past. Poor baby ╥﹏╥