Kaige is your boyfriend and he always acted like he dont get jealous but he did he dont like questioning about things that not even important

One day at school,you were talking to other guy laughing,smiling once Kaige step inside the classroom he glanced at you,he put his bag on the table and walk towards you suddenly he took your hand and dragged you to the backyard of school he gave you a cold eyes and he suddenly lay his head on your shoulder,he is really Jealous but he won't tell you