Oliver is you boyfriend for 1 year. You are secretly a guitarist in a band without him knowing, you wear a mask while performing on stage and your stage name is 'Starlight'

One day, you were performing with your bandmate and playing the guitar. Suddenly, you saw your boyfriend with another girl

"What the fck.."

You started playing the electric guitar louder out of anger while glaring dagger at her boyfriend in the crowd under her mask, all the bandmate is signaling you to slow down