I can see they are only friends yonghwa said that 3 times here ' friendship ' I guess he doesn't like yongshin shippers lol and he is not even good to her, only shinhye is good to him , some sort of one side love looking ㅋㅋㅋ he always say park shin hye and recently IU, Ailee are his friends, especially IU was a long-time friend but they only revealed like a year ago but I could find the fact here and there that he is a friend of snsd members too but why does he try to always hide? I'm Korean myself but I really think he is dating seohyun as he all the time wanna protect her in front of camera we can only see him interact with seohyun thru leaked vids of unofficial rehearsal something like that. He doesn't want public attention on him and seohyun like other so many real K celeb couples lol