Responses
I think he denied , maybe because he felt embarassing and his sweating
Or maybe he slept with that office guy then went back home but just didn't remember what happened..?
They did it(hyunwoo &subin)
It's the same room
http://www.mangago.zone/read-manga/hate_mate/uu/hate_mate-chapter-4/4/
Wait, wait, wait.
So if Subin slept with the office guy, then why is it shown that when Hyunwoo woke up from his sleep, Subin was beside him (well, I remember that Subin has a fluffy/funny sleeping eyes)? http://www.mangago.zone/read-manga/hate_mate/uu/hate_mate-chapter-3/33/
And how would Subin sleep with the office guy if he was together with Hyunwoo that night? (I mean that time when Hyunwoo punched him because they kissed). Was it possible that Subin met the office guy after that?
I think that it is more reasonable to think that Hyunwoo is denying that they slept together that night.
Or maybe, was it really a wet dream?
Uughh. So many questions. But oh well, these will be answered only after the next chapters will be uploaded here. ╮(￣▽￣)╭