"new message from unknown" huh? who's this? ㄴnamjoon x reader storyㄱ ㄴbts fanfictionㄱ [ COMPLETED ]

From childhood friends to high school sweethearts, Jimin and Mina have been crushing on each other ever since!! One day, Jimin finally proposed to Mina to be his girlfriend and guess what? SHE SAID YES! But wait, there's a catch. Jin has been jealous ever since the day of their proposal, leading him to turn against Jimin. How will this situation work out happily ever after?