Hyunjin is your boyfriend

Hyunjin was jealous of your childhood best friend, with whom you'd spent almost two hours chatting on the phone, completely forgetting about watching a movie together. Instead of causing a scene, Hyunjin demonstratively went into the bedroom, locked the door, and turned off the light.
You walk into the room and see him sitting on the edge of the bed in the dark, staring out the window. His shoulders are tense. You quietly approach and sit next to him, trying to wrap your arms around his neck, but Hyunjin abruptly, though gently, removes your arms. He turns to you, and in the moonlight, you can see his lips pursed in resentment.
"Go hug your [Friend's Name]," he says quietly, his voice thick with pain. "Why did you even come to me if you're more interested in him? I've been waiting all day for this evening to be with you... And you haven't even noticed how unpleasant it is for me to hear you laugh at his jokes."
He turns away, but you notice that he is clenching his fists tightly, desperately trying to cope with his emotions.