Since day one, Jeongin HATED your boyfriend. Not that he'd actively insult him or anything, but his behavior switched around him.

Jeongin would side-eye the man, and grimace when he saw him walking in after you. You never understood why. Jeongin had tried showing you that your boyfriend wasn't the guy you thought he was, but love blinded you.

Until you discovered the truth, the text messages... He was cheating on you. You didn't know who to tell, so you went to Jeongin in disbelief.