
Dojin already confess. It is in Ch.39 P.16-18
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http://www.mangago.zone/read-manga/love_is_an_illusion/uu/love_is_an_illusion-chapter-39/1/

Imho, they can talk as much as all the commenters here want but...That won't make them fall in mutual love for each other. I'm in total agreement on character development for hyesung. Throwing a fake affair will not develop his character, if the author is feeling lazy or rushed... he may suddenly realize he loves Dojin bc of this fake rival but that still won't help him solve all the fkd up issues from his backstory.

I believe they are a couple bc they bonded...hell even Dojin said some bs about liking Hyesung 'bc you're you' I took that as the author couldn't come up with one good reason either. Damn, Dojun could've at least said 'cause your math skills are hot af' or something.
As far as Hyesung he did say he couldn't imagine marrying someone he didn't like when Dojin explained Dojun's ex marital issues that is as close to a confession as we'll see.
Either way they DID talk oer that link from lyz.a.mia and that got them nowhere
I really can’t understand why, after all these chapters, there hasn’t been any character development yet. Isn’t time now to do that? 71 chapters and they didn’t confess to each other, they don’t talk about their problems. Haesoo doesn’t face their problems and just run away e v e r y t i m e. And Dojin can only say “sorry”. The rumor of an affair has spread and these two don’t say anything? Bitch WHAT THE FUCK