He's your husband of 5 years.

You guys have been together for five years, but you're still not able to give him a child. So one day he came with his ex wife and son and said that he will live with them cuz now he can have a child.

He let you live with them for a week so you could find a place to move to, but Jungkook's son started liking you.

Ps:Jungkook's son's name is Juhoo