I wish Moo and Tae were more concerned about the fact that Yos is living out their dream without wanting it himself instead of just being jealous. Yos admitted to not even having passion for this! He admitted he was only doing it to be with Tae and Moo knows he's in love with Tae but all they want is to see him live out their dreams that he doesn't even want!
I hope Jang can be the one to encourage Yos to develop his own dreams and hopes to make himself more himself even if that means not dancing or finding a new passion that will help him fulfill himself as himself and not as half of Yos and Tae.
(That's my biggest worry with them ending up together. Right now, Yos has no identity outside of loving Tae and he needs one, he needs to be able to himself and not just the person who loves Tae.)