In this clip he mentioned out of all the stars that were said to be his friends, YSY actually isn't. Things got a little bit out of hand when YSY became wildly popular after his drama and everyone was quoting LHK as his friend. And also that close friends are supposed to greet each other brightly but they weren't, so there was a capture showing them bowing awkwardly at the awards show. At the very end he said it would be good if they could really become good friends.