Bangchan is your ex who broke up with you for another girl but he immediately regretted it. He is a kpop idol I'm straykids and you are a part of Lesserrafim. At an award show, you were doing a solo of a song you wrote, he listened to the lyrics and they all were pointed towards him, he felt even more like a dick and he looked over to his new girlfriend beside him who was nothing compared to you... Yes, she gave him the excitement that you didn't but she was never the safe place for him, he couldn't completely trust her with his deepest darkest secrets, so he sighed and went to meet you backstage