Book One: Break Me Like a Promise An enemies-to-lovers, dark magic, soul-scarring slow burn. Olivia Berkshire never asked to be the only one who could get through to Mattheo Riddle. She and mattheo riddle were the biggest enemies in the whole school. And then something happened...something everyone thinks about... The fall in love. She never asked to be dragged into the darkness that clung to him like a curse, or to fall for the very boy she swore she'd never forgive. As the twin sister of Lorenzo Berkshire and one of Slytherin's fiercest, Liv has spent her years at Hogwarts fighting, surviving, and keeping her distance from the Riddle brothers-especially Mattheo, whose arrogance, rage, and bloodline make him the last person she should care about. But when tensions reach a boiling point, when insults become confessions and detentions turn to secrets, Liv and Mattheo find themselves bound by something deeper-and far more dangerous-than hate. Between forbidden attraction, shattered trust, and dark family legacies, everything Liv knows begins to unravel when she learns that Mattheo is being watched... by the one man capable of destroying everything she loves. Voldemort is back. And he wants Mattheo's heart as a weapon-and Liv as leverage. Now, forced to choose between protecting her twin, saving Mattheo, and surviving herself, Liv is caught in a war of loyalty and love. But Mattheo is slipping further away. And as he spirals deeper into the darkness, Liv may be the only thing tethering him to the light. But how do you save someone who's already becoming the villain? ⸻

Eliana Rosier has always been fierce, reckless, and untouchable-exactly what a future Death Eater should be. But when she returns to Hogwarts for her sixth year, she's not just the sharp-tongued fighter everyone remembers-she's stronger, bolder, and impossible to ignore. Mattheo Riddle has spent years playing games, thriving on chaos, and leaving broken hearts in his wake. But Eliana? She's the one girl who never fell for his charm, the one opponent who never backed down. Their rivalry is legendary, their insults sharper than any hex, and yet-there's something between them neither of them will admit. With Hogwarts on the brink of war and the Dark Lord's influence growing, alliances are tested, friendships are fractured, and enemies become something far more dangerous. But when Mattheo makes a move that shatters the fragile balance between them-dating someone Eliana despises-she's forced to decide what's more important: revenge or something far more dangerous... the truth about what they really are to each other. Between late-night fights, secret parties, and the looming darkness of war, Eliana and Mattheo are caught in a dangerous game where the only rule is this-never fall first. Mattheo Riddle × OC