Sojung was your boyfriend for 2 years but broke up because of misunderstood , you and him broke up 1 years ago and you guys are in the same band, your a vocalist and he's a guitarist

While your were singing your new boyfriend, jihun. Was in the crowd and sojung notice it and glare at jihun, then he turn up his guitar louder that the crowd look at him even you, he seems jealous.