NOVEL SPOILER:
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Hey guys, in the novel Ilic actually does have a dream that Sayan will die, and even though he doesn't die in the novel itself, it is heavily implied that he will die later on because he is super sick. Also, Ilic never actually tells him that he "loves" him, as that was added in the webtoon. In fact, it is made pretty clear that even though Ilic understands they are a couple and cares for him, he doesn't love him the same way Sayan does, like true love. On Twitter, someone asked the author to please tell us if Ilic actually loves Sayan in the end and she said she would "leave it to our imagination," but that is what the novel implies, that he doesn't love him the way Sayan wants. Then in another tweet someone begged her to please just say he loves him and she literally said "no" xD, meaning she won't confirm it but it is understood that he doesn't love him. I was reading another forum discussing the ending of this novel and honestly everyone feels the exact same way xD In fact, if you go back and read this webtoon with that mindset, you'll realize it really is like that.
Was kind of waiting for Ilic to say "I love you" to Sayan until the end... but now its ended I'm kind of glad he didn't coz it would be totally out of character if he did. and honestly Sayan essentially trapped Ilic into this relationship they have, their intimate relations have always been dub-con and the levels of love or even the type of love they have for each other are completely different. Ilic just gave in at the end and probably sees Sayan as a companion he got used too. and while I did kinda feel a tiny bit sorry for Sayan not hearing those words, i remember that its his karma for trapping Ilic but also its not like Ilic isn't showing any affection at all...