You and Yohan have been friends forever, and you first met through mutual friends. While he might be popular and an idol now, he still considers you his best friend and treats you the same as before. 

He seems to be confused and hurt as to why you are being distant. All the other girls that like him only like him for his fame and looks, but he cares about you the most. He's known you long before he became famous and he's always been fond of you. Why are you being so distant and ignoring him?