
Him blaming Soo In and twist the story to fit his memory as if he's the victim really baffled me. SPOILER below
For once I thought to see the raw. And I can't believe it. The author make the backstory for him as if to defend him.
So from what I saw, his sister's boyfriend leaved her with another man, he's gay, so his sister resents gays and he comforts her sister listening to her story. Then during school he starts to become friend with Soo In and fall for him. They are happy with each other. Until one day, his sister sees them walking together being all happy and confronts him at house about their relationship. From his answer, his sister see that his brother falls for another guy just like her boyfriend. The despair made her kill herself. Knowing he's the cause his sister killed herself drove him mad. He started avoid Soo In and he is filled with rage over the guilt. He became twisted. So basically, he loved him but he tortured him. Because he can't accept the past. That's why he keeps going out with women but still keeps Soo In as his plaything. He's planning to keep Soo In with him even after he gets married. That's what he means after all he's done to be with Soo In forever.
Well, I'm not happy the writer give him a sad backstory. He's still a dick and crazy af.

Not wanting things to end so there should be no beginning. I think Kang likes Jun Ho because he's strong and strubborn so he doesn't break easily. For him, who acts strong but actually is weak, meeting Jun Ho who actually is strong is a support for him. He's so twisted and corrupted inside that I don't know how he would get out of this hell he created himself.

Reading raw, I don't understand anything but I believe there will be a plot twist later in the story.

https://18.boylove.cc/home/book/capter/id/42927
just turn back the chapter to chapter 10

Who is this Lord Song? Could it be he is Seung Ho's old flame when he was young. Maybe starting as friend, then he is fond of him in a romantic way, caught by his father, they were separated, and Seung Ho was treated as being illed. His expression when he was brought to the doctor shows he's kind of infatuated with thought of someone.
Then years later, when they got separated, Seung Ho is a lost cause, resenting his father.
I thought his old flame was dead. If he was still alive, then if they meet again later, what about Na Kyum?

He knows that saying Jo Woon has a relationship with Haesoo and that Jo Woon is gay won't cut it because he doesn't manage to get a proof since they broke up. Now, he's bringing issue with Jo Woon hitting a guy back in high school days. If Hae Soo comes forward that Jo Woon is just defending him because they guy said they had indecent relationship. Then everything will spiral down for both of them.
Honestly, I don't really know how the relationship between Jo Woon x Hae Soo x Tae Kyung will end up. But I always feel what Jo Woon and Hae Soo has is deeper than wjat it seems. That's what makes Tae Kyung anxious. And we can see that even when they broke up, Hae Soo keep thinking of Jo Woon every other chance. The fact that their family are the hinder of their relationship is what keeps them apart. If the family is no longer an issue, what would you think will happen? Jo Woon has let Hae Soo go and never mind about his relationship with numerous guys or boyfriends and still single mindedly love Hae Soo only, even if he will just remain as brothers when their parents remarried. It really takes determination and deep love to do that. Hae Soo, despite his denials and continous look out for other opportunities of better relationship, I'm quite sure also holds deep feeling towards Jo Woon. After all, they're each other's first loves.
If Hae Soo doesn't develop deeper feeling towards Tae Kyung to the point he no longer cares about Jo Woon and just considers him as his past, then like Jo Woon said, he's the one who will remain in Hae Soo's life.
The sisters are seriously hilarious. I really want to see more of this.