Wtf is this, stupid bitch ass omega. It's good that taeha doesn't give a fuck about you.

But he does give a fuck

Literally it's been implied that he's been interested since their trainee days, although he couldn't put a name to the feeling, so he just found it annoying, but about 2 chapters ago, he finally admit it. And in this chapter when Chansol confronted him thinking Taeha though he was "disgusting", Taeha literally said "it's the opposite of disgusting..."