Yaoiwhore

He did tell him something... Only we the audience (as per usual) didn't get to hear it to keep up the suspense ┗( T﹏T )┛

so frustrating （￣へ￣）

he didnt give him an answer, I think

Ok so (from my understanding) the best friend was doing his job working on telephone poles or whatever and he got a call from the asshole and the asshole was obviously assuming that the bestfriend and fake blind guy were dating or something so he was yelling at the bestfriend over the phone, I think the killer was already planing on killing the asshole and he just happened to be on the phone with the bestfriend when he was alone and so the killer killed the asshole while he was on the phone and at around the time just before the killer had killed the asshole I think the bestfriend fell from the telephone pole (so his phone was still on) and then the killer killed the asshole and picked up the phone and it happened to be the bestfriend and since the bestfriend was still alive after he fell he could somewhat make noise so the killer called him an ambulance cause he could tell he was hurt

Sorry that was long hope this helped clear it up a bit <3

No, he almost certainly did. Seo did comment on liking his answer, after all...