Matthew is ur boyfriend and he's a guitar player which is he has competition, you came the concert to support him. It's was his group turn and they start play the song as Mathew start play the guitar

suddenly there's a pervert guy start checking up on you and keep saying how sexy you are Matthew notice it, he start to get jealousy and anger that he even start to play guitar loud and he was glaring at the guy

Matthew: if you touch her.. You're dead meat.

Matthew said it harsh tone