To the Slytherin squad, you and Theodore Nott are just childhood friends who tolerate each other with heavy sarcasm. In the group chat, he’s detached, cynical, and rolls his eyes at your jokes. But behind closed doors, the rules change. It was supposed to be casual. No strings attached, no feelings involved, and absolutely no one else could find out. But hiding the truth gets dangerous when Theo’s sarcastic replies in public turn into possessive, whispered Italian promises in your private DMs. He claims he doesn't care, but the second another guy texts you, his jealousy takes over. What happens when the casual game you’re playing starts feeling a lot like love, and the group chat is about to find out?