The way I see it is that Yuyang just thinking what's best for LiHuan and open up the possibility of him with girls (considering that he said he's not gay) and have a normal life. Yuyang just doesn't want to drag Lihuan in the gay path. Beside falling for a straight guy is a thorny path.
Yes, he has been doing that all along...but in the last few minutes he had an epiphany and we readers finally saw some progress. He was moving past pushing LiHuan away out of worry for lihuan getting outted as gay or bi and decided to sort out his own feelings and go for it. It looked like he was all set to confess before he saw lihuan with her
Well, I would say that maybe Yuyang just doesn't want to interrupt them, considering Lihuan doesn't have a lot of friends wants to find the right time and not rushing into it because he said: "better talk later". Probably 10 more chapters before Yuyang confess. lol
but, yeah I feel like the story is kinda dragging.
Why would YuYang automatically assume his bae moved on and is interested in this chick? Before he took his nap didn't he ask Yu if he like him a little bit by now? Yu has some sense, I think. By the time he finishes all that BBQ he'll give it another shot.