He loves him so so so much, it looks like his soul and heart died along with his beloved Hosik. Even worse, he cannot start anew or move forward. It took them long to be reunited. Even longer for Sunghyeon who has to live with the lingering memories. You are a fool if you cannot understand why SH acted the way he did to ensure that he can keep Hosik safe and sound by his side.
He loves him so so so much, it looks like his soul and heart died along with his beloved Hosik. Even worse, he cannot start anew or move forward. It took them long to be reunited. Even longer for Sunghyeon who has to live with the lingering memories. You are a fool if you cannot understand why SH acted the way he did to ensure that he can keep Hosik safe and sound by his side.