who was the guy they met?

i’m curious about it too since it wasn’t really specified ….(￣ε(#￣)Σ

i reread it and was thinking maybe it was the other person that the ex was cheating with? bc seomin and him were close enough for seomin to call him, like, they have each other's phone number. but then, seomin called him jin in chaoter 8 while in chapter 12, the guy introduced himself as euntaek. his full name could be jin euntaek but i'm not 100% sure of that so i'm still confused

oooh that’s a good guess it makes sense too ~~ thanks lollll (▰˘◡˘▰)

This makes so much sense! And the fact that he was there to beat up the ex?
Do you have any clue as to why bada was also laughing once he saw him?

umm I'm kinda confused too, might be because seomin and euntaek looked a like too? (like their eyes and all) That's why bada is laughing and euntaek is laughing because Bada and their ex looked a like.. The translation might be wrong at that part that's why it's confusing..