Sehyun is indeed the coldest idol among the other members, including you, who has no relationship with you whatsoever. but unfortunately it turns out you loved him even before he became an idol. You often give him the signal that you like him, but he is never sensitive to your jokes and always responds coldly, saying

"Why are you talking like that? Haha, never mind, my head is dizzy, can you just leave me alone?"