I think that Wangzi and Rain Loong kinda jealous of how Jin Long got together witch Black Long who is the most beautiful Long among them all. So they're kinda envious of them.
Btw I kinda feel bad cause, EXCUSE ME FAN FAN AND WING LONG IS SO ADORABLE AND BEAUTIFUL TOO
But anyway that's just what I think
Wtf no, cant you see how much they adore their own boyfriends why would they be envious because they didnt get the beauty? Its so out of character of the semes if thats true. And never did they hint that they are attracted to Black Loong
They just envy because their friends are already happily married and content maybe you know, they also want that happiness with their own lovers? ( ̄へ ̄)jesus, you guys should read properly.

Can someone claim what they were talking about and why are they acting jealous looking at enshuo being happy? Is it about… that? If it is… they’re in front of the school and they talk about that, lmao