“You have a twin sister?” Jungkook chuckles at his son as he tucks him in after a bedtime story, “And what makes you think she’s your twin?” He muses, now slightly intrigued by the story.
“Cus we look just alike, Daddy! And we both like banana milk, and icecream, and coloring too!” He giggles after he’s done explaining himself, “We’re like, the same!”
or
after hearing such an outlandish story from his child about a 'twin' sister he has, jungkook plays into his child's imagination just this once and finds there's more truth to this story than he thought.
“I’m pregnant.”There is a long pause.“You shouldn’t have.” Jeongguk says as the words pours like there were dry leaves milled between them –the loudness of the september rain pouring down is not sharper than his big, doe eyes as he looks at the faded body in front of him. “You shouldn’t.”“I know,” Seokjin hiccups. He can feel the shame and it crushes him like someone just punched him in the guts, so he hugs himself to take the pain away. “I’m sorry.”
OR...
Jeongguk is a married man. Not with Seokjin.