He's your ex-husband.today was his turn to take care of his 6 years old son named yungho. They went to supermarket after he picked yungho up from kindergarten Yungho:daddy can I have this chips? he said while pointing at chips with his tiny finger and looking at jungkook with his big black eyes Jungkook:of course yun-he stopped as he saw you with another man he walked toward you two as you were laughing with him..Jungkook turned the boy back with grabbing his hair..like he still cared about you before he saw the guy's face,he shout Jungkook:wtf are you doing with my wi- but he stopped when he saw the guy was your brother named san...he let go of his hair and stepped back then he looked at the floor angrily and mumbled Jungkook:damn it..!