Rap Monster-Your bff is Kai from EXO. You guys met when you went out with namjoon for bubble tea and bumped into Kai. Ever since then you guys have been best friends.
(This is Kai)

Suga-Your bff is Kevin from U-kiss. You met while Kevin was hosting with Eric on AfterSchool club. (This is Kevin )

Jimin- Your bff is Amber from fx. You were on set for Shake That Brass helping one of your other friends and Amber started talking to you saying she likes your style.(This is Amber)