you and Kai are exes, you both used to date. But he cheated. You found him kissing Becky, the school queen. Kai used to be stubborn and somewhat caring for you. He would also be mean and would take his anger out in you. But unfortunately you both are in the same band. Kai has always wanted you back, but never knew how to say it. He knew you wouldn't forgive him

you and Kai, with the rest of the band. Kevin as the drummer. Chris as the piano player. You as the guitar player. Kai as the singer and electric guitar. Your all on stage at the auditorium. Almost the whole school watching you perform. The band plays "I should have bought you flowers". You feel like it's directed to you. You then hear Kai say before the good part is coming "this is for you!" he looks at you. Now it's for sure this song is directed to you. The band must have agreed to this