I've already read the novel, but it has been a long time so I don't know if I'm remembering it right lol
But, guys, do we really think that Seju is that kind of horrible person who would call over his s*x partner knowing the guy who likes him (Sejin) is also there and is even sick?
Spoiler!
As far as I know, Seju didn't invite Doyoon over. Seju is very drunk and he just wants to sleep lol. Doyoon showed up uninvited, and he didn't even step inside the house 'cause Sejin didn't open the door for him. And later, Seju will completely cut ties with him — but take that with a grain of salt 'cause my memory might be wrong (sorry!). What I'm sure is, there will be $mut next chapter! Though it's not really an ideal first s*x, but the next one will be great 'cause Seju really planned to make it great and enjoyable 'cause he felt bad that Sejin's first time wasn't ideal.
