
I don't know the importance of the new daddy guy but I remember him asking Jin to bottom for him some chapters ago

I think they were the thing back in the day. In the Official Chapter 8, the blond guy mention this — Isn't he the guy you banged and got completely obsessed with?— and than Jin smash his face. So he was definitely top him back in the days, Jin probably fall in love with him and done something for him, but still daddy throws him away, broke up or something. So because of that with his CEO woman, he has a problem of trust no matter how hard he is trying. It's gotta be something like that. Anyway, the DRAMA along with the PAIN is coming FOR US! (︶︿︶)

What I was thinking is that Jin was the bottom and Brendon was the top. I don't think they were switch in any ways (no way that daddy will bend). Probably back in the days, before Jin meet him, he was only a top. And then after they meet Brendon rock his world, so now it is not enough for Jin to top only.
Once you experience the prostate and the anal orgasm on the right way, nothing will ever be enough, because they are very powerful.
That what I assume how things were happened, I mean by yaoi logic. Idk, we will see in future what really was the deal, now we can only guessing.
communicate? no! have sex. great logic but it was hot though