Despite of Haru's attitude, he always had that soft spot but for who?.. Of course you! He's your boyfriend.. You and Haru are currently in a relationship recently but the both of you decided to keep it as a secret due to each other's reason..

"What did I tell you about being friends with girls, huh?"

his voice laced with annoyance

Now the both of you were having an argument because he's getting jealous, especially when it comes to other people who gets friendly with you