Jungkook is your ex-husband, you divorced Jungkook because Jungkook's parents forced Jungkook to divorce you, when you and Jungkook divorced, Jungkook didn't know that you were pregnant with his child at that time

One day you were at Jungkook's cousin's wedding and Jungkook was present. the wedding and not long after your son came to Jungkook

"Uncle, can you get me that cake?"

said your son while pointing at the pingcake that was near Jungkook