Fargo never said that. That comment was made by a fan(I mean breaking them up). Everything started when some fans were asking her to give a baby to Dojun/ Heeso couple cus Fargo had the bad idea of making that ... Wiyomi
Honestly...I just want to Byul have at least a friend... I guess...cousin or something em...ANYTHING FOR OUR BYUL Σ(っ°Д °;)っ
spoiler.
pretty sure the author said it’s canon that heesoo and dojins brother won’t last.