Exactly, they are both insecure about the rs for clashing reasons. Jae is scared of how easy it is for Garam to call it quits, and Garam is scared that if he stays Jae will be victim to similar trauma. So Jae acts impulsively to keep Garam near which makes Garam more worried, and Garam distances himself to prevent outing Jae which makes Jae more paranoid. It’s actually so fvcked

I get both sides
Garam is scared of how easily jaehyuk sacrifices things/family/friends and opportunities for him and Jaehyuk is scared that Garam still does not think he is in it for the long run.
I think a big reason as to why jaehyuk does what he does is because he feels like he has to in order to convey how serious he is about their relationship. He overcompensates bc of his past homophobia.
Garam is traumatized from his past relationship and family issues. All he sees is that "Jaehyuk is throwing his life away for me". I think he feels insecure in their relationship..
Idk they need to have a serious talk to fix everything, no more secrets and no more taking big decisions without consulting the other first.