My brothers bestfriend; Grayson Dolan Fanfic

Grayson Dolan has the hots for his bestfriends sister and she has the hots for him, what are they gonna do when Kai (the brother) finds it that they are secretly dating ? A NEW FANFIC I KNOWWWW BUT I LOVE THIS ONE HONESTLY SO I HOPE YOU DO !!!! Xoxoxxoox