he interrupted mari and didn't let her finish her sentence. so he still thinks that he's dating the married dude who's cheating on his wife with mari and cheating on both of them with him. he didn't get the chance to hear the part were she said that it's actually her big brot-
He is no longer afraid of her finding out.
He dumped Sugar Daddy with the expectation they will no longer be in contact--- he exiled Sugar Daddy out of his life.
So whether Mari knows now is no longer relevant. The guilt he felt about being involved with Mari's lover (and that other lady bitch) was really short lived as he felt horrible over the fact he can't have Sugar Daddy just to himself.
I think it’s finally happening next chapter
i dont get it. why did he react so nonchalant when she said she knows he is dating her oppa? wasnt it his biggest fear that she might find out? or did he believe her being angry before was her finding out he was dating "him"? i have to reread now because i dont understandddd