At this stage Eunho has taken Hanjun's role as being a person Jaeha is just making a "sex partner" all because Jaeha is scared of commitment. I don't think Jaeha grasps how hurtful and frustrating it must have been for Hanjun to have spent that decade with Jaeha, seeing him get married then divorced thinking that he might finally commit. He has managed to sever ties and looks like he has found some happiness though, Eunho too broke away for his military service and now he's back and Jaeha is feeling guilty over marrying his ex wife just to stop feeling bad over getting outed over the photo's/ prejudice he experienced as a student and Eunho's feelings for him which he was too scared to confront as well. I guess the series will end with Eunho and Jaeha together though.
Honestly this manga is starting to piss me off