Spoiler

Fantastic if

I just came to realize that my spoiler was literally cut after the emoji haha it supposed to be long like 3 paragraphs more lol but it's ok. Just wanna tell you that a great misunderstanding will happen before the ending. It was literally f*cking good. The seme became devoted exclusively for Inseob. Tho Inseob broke down and all, even gossip spreads like a wildfire about the seme secretly dating his co-star actress, Woo Yeon never cheated. He became human near the end, he feel pain, he feel regret, he feel sad, he feel happy, he feel longing someone. The best part? he followed Inseob to US after settling his business in the Korea as an actor (meaning, he retired as an actor), clear the gossips and everything was for publicity only, and settled all his assets under Inseob's name.

Damn this only happens in fiction .. in real life it never happens

wait can you tell me the misunderstanding plz

Since Woo Yeon is an actor, gossips can be disastrous. When the media outlets reported that Woo Yeon is secretly dating his co-star actress, Inseob came to know about it. He do his investigation to the point he found himself stalking Woo Yeon again. It'es heartbreaking, I know. Inseob saw Woo Yeon in the basement parking (afaik) assisting her rumour gf in HIS CAR. If you remember during the earlier chapter, Woo Yeon did this when his about to sleep someone but he forgot something in his apartment while Inseob just done his cooking and cleaning the house only to see him brought a woman to bed with. This is not knew to Inseob but having to see this kind of scenario brings him back all the pain and having a trust issues again. He tried to do deny and prove his suspicions at the same time when Woo Yeon became so cold towards him. At that time, Inseob barely see Woo Yeon going back home with him. 'Til he found out where his car going to after the taping. The car usually take hours inside the villa or something, and everytime the car go out, Woo Yeon is always with her co-actress. Inseob is getting more and more depressed that his suspicions becoming true about Woo Yeon cheating on him.
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Little did Inseob know that Woo Yeon secretly staying his old apartment and reading all his diaries, pictures, and all the beloved things Inseob had in the room. AFAIK After dropping the actress in her home, Woo Yeon takes time to go out again or something like using different car when he's going to Inseob old place. Woo Yeon just doing it for the clout because he's promoting the movie or series his working with. You know, a typical PR marketing to engage viewers and sell lots of dramas to make the movie known or something.