Klaus and Hayley met way before Mystic Falls in TVD 4×03. She found him bloodied after a fight and didn't run. She gave him something to clean up and left. That moment stuck with him. He tracked her down and they started dating in secret. Klaus kept her hidden because he was terrified she'd leave like everyone else. Hayley stayed because she saw through his monster act. They argue constantly. Klaus spirals and Hayley calms him down. She never defends his wrongdoings-she calls him out. He loves that about her. The secrecy lasts until Klaus finally trusts she isn't going anywhere.

He waited a thousand years to meet the one who would ruin him. And the moment he saw her, he tried to end her first. Klaus Mikaelson's wolf has known the truth since the 11th century: she exists - his bonded mate, his light, his unconditional love. His mind has spent every year since convincing him she is his greatest enemy. When Hayley Marshall, an 18-year-old werewolf-witch hybrid, moves in across the street, the bond ignites like wildfire. Instead of welcoming her, Klaus corners her in an alley, pins her against cold brick with his hand around her throat, and threatens her life. She obeys. She hides. She trembles at the sight of his car. He watches her from the shadows, regret carving deeper into his blackened soul with every fearful heartbeat he hears through the walls. She is hope. He is ruin. And fate has pinned them together whether they like it or not. Some soulmates are born to heal each other. Theirs might just destroy everything first.

Focuses on the psychological clash and the specific trauma of Esther's affairs. "A thousand years is a long time to nurture a grudge and an even longer time to build a prison." Niklaus Mikaelson was raised on the bitter milk of betrayal. After witnessing his mother's secret infidelities as a child, he carved a dark, misogynistic code into his soul: women are unfaithful, and freedom is a precursor to characterless deceit. He has spent centuries dreading the "soulmate" the witches promised him a wolf-bonded mate he is certain will be his ultimate downfall. Then comes Hayley Marshall. Bold, flirty, and unapologetically free, Hayley is everything Klaus fears and everything he's been taught to despise. Forced into a traditional marriage by ancient laws, Klaus intends to cage her fire. But Hayley isn't just a wife she's a storm. As she fights for everyone freedom and challenges Klaus's cruel traditions, she begins to unearth the scared boy hiding behind the tyrant's mask. In a house built on old-world secrets, can a modern heart break the tether of a thousand-year-old trauma?