The one who needs to earn someone's trust is su-ah. When su-ah learned to respect and see Juhyeok as a person outside of being with him then Juhyeok will come to terms with his feelings. When su-ah realize how his actions has consequences and how it undermining Juhyeok and he admits and understand that instead of saying sorry just for the sake of it then he'll have Juhyeok's affection. The fact he already does but he be acting a fool.
The one who needs to earn someone's trust is su-ah. When su-ah learned to respect and see Juhyeok as a person outside of being with him then Juhyeok will come to terms with his feelings. When su-ah realize how his actions has consequences and how it undermining Juhyeok and he admits and understand that instead of saying sorry just for the sake of it then he'll have Juhyeok's affection. The fact he already does but he be acting a fool.