After My Mate Chose His Pregnant Mistress

The bass from the celebration downstairs thumped against my floorboards like a second, mocking heartbeat. They were toasting to the happy couple, to the miracle pup, to the future of the Moonstone Pack. I was upstairs, shoving my life into two suitcases.

I didn't pack for a vacation; I packed for an exile. Staying here meant watching Blair O'Brien swell with Dominic's child. It meant bowing my head to a woman who had manipulated her way into the Luna's chair, a seat that was supposed to be mine. I would become the pack's favorite pity object—the barren spinster aunt who warmed bottles for the Alpha's true family.

"No," I whispered to the empty room. "I will not be a ghost in my own home."

I pulled the map of our allied territories from my desk drawer. My finger traced the borders, skipping over the friendly, soft packs nearby. I needed something harder. Something that would make Dominic realize exactly what he had thrown away. My finger landed on a territory circled in black ink: London. The Shadowclaw Pack.

They were known for brutality, for a bloodline rumored to be tainted with Lycan fury, and for an Alpha who ruled alone. Alpha Colin Butler. Unmated. Ruthless.

My hand didn't tremble as I dialed the private line my father kept for emergencies. It rang once.

"Speak," a deep voice answered. No greeting. Just command.

"This is Serenity Evans of the Moonstone Pack," I said, my voice turning into the cold steel I needed to survive. "I have a business proposition, Alpha Butler. My pack's resources for your protection. Sealed by a marriage alliance. With me."

***

The next morning, the silence in my father's office was suffocating. Alpha Evans looked ten years older than he had yesterday. He stared at the transfer papers I had slammed onto his mahogany desk.

"Serenity, you don't have to do this," he said, his voice pleading. "Dominic made a mistake, but he is still your brother. We can find you a mate here. Someone worthy."

"Worthy?" I laughed, a dry, humorless sound. "You let him humiliate me in front of the entire pack, Father. You let him bring his mistress into the Pack House and call it honor."

I leaned forward, placing my hands flat on the desk. "Dominic destroyed my standing the moment he knelt to you instead of me. If I stay, I am weak. And if the Moonstone Pack is led by a weak Alpha and a manipulative Luna, we will fall. I am leaving to secure an alliance that will keep our borders safe since your 'golden son' is too busy playing house to worry about politics."

My father flinched. He picked up the pen, his hand shaking, and signed the papers. He knew I was right.

"I am sorry, Serenity," he whispered.

"So am I," I replied, taking the papers. I didn't look back.

***

The gravel crunched under my boots as I loaded the last suitcase into my car. The morning air was damp, clinging to my skin.

"Rin! Wait!"

I stiffened. Dominic jogged down the porch steps, breathless. Blair trailed behind him like a shadow, one hand resting protectively over her stomach, her eyes darting between me and the car.

"Where are you going?" Dominic asked, reaching out as if to grab my arm, then stopping short when I glared at his hand. "Father said you're leaving. You can't just leave, Rin. We're family. We can fix this."

"Fix it?" I looked at him, really looked at him. The guilt in his eyes was genuine, but it was useless. "You made your choice, Dominic. You chose your honor. Now I'm choosing mine."

"It just... it just happened," he stammered, running a hand through his hair. "I didn't mean to hurt you. I want you to be part of the pup's life. You're the best person I know."

My gaze drifted past him to Blair. She was wearing a triumphant little smirk, but it faltered when my eyes locked onto her neck. There, resting against her pale skin, was a silver amulet. It was hammered into the shape of a wolf's paw, with a small moonstone in the center.

I had forged that amulet myself. I had spent weeks infusing it with my scent to calm Dominic’s wolf during the wars. I had tied it around his neck the day he left, a promise that he would return to me.

Now, she wore it.

Something inside me snapped. Not a break, but a severance. The final thread connecting me to Dominic Weaver disintegrated.

I didn't scream. I didn't cry. I simply opened the car door.

"Goodbye, Dominic," I said. My voice was so flat it sounded dead.

"Serenity, wait—"

I slammed the door, cutting off his voice, and gunned the engine. As I drove down the long driveway, I watched them in the rearview mirror—a man who had lost his way and a woman who had stolen a life she didn't understand. I didn't tap the brakes once.

***

The drive to the airport was a blur, and the flight to London was a grey haze of numbness. But as the rental car crossed the boundary line into Shadowclaw territory, the atmosphere shifted. The air here felt heavier, charged with static electricity.

*"Serenity,"* Sienna whispered. For the first time since the rejection, she lifted her head. *"Wake up."*

The heavy iron gates of the Shadowclaw estate groaned open. The manor ahead was imposing, built of dark stone that seemed to drink the light. Rain began to fall, a sudden, torrential downpour that blurred the windshield.

I parked the car and stepped out. The rain soaked me instantly, plastering my hair to my face, but I didn't care.

A scent hit me.

It wasn't just a smell; it was a physical force. It slammed into my chest, stealing the breath from my lungs. It smelled of deep, ancient cedar forests, ozone, and the sharp, clean scent of rain on hot asphalt. It was intoxicating. Terrifying.

*"Mate,"* Sienna purred, her voice vibrating with a power I had never felt before. *"Mine."*

My head snapped up. Standing at the top of the stone stairs, sheltered by the overhang, was a man. He was massive, his shoulders broad enough to block out the world. He wore a black suit that strained against his muscles, and his stillness was predatory.

Alpha Colin Butler.

He wasn't looking at the car. He was looking directly at me. Even through the rain, I saw his eyes flare with a golden, inhuman light. He took a step forward, his composure cracking, his nostrils flaring as he inhaled the same air that was drowning me.

I had come here for a contract. I had come here to sell my title for protection. But as the lightning flashed, illuminating the hunger on his face, I realized the Moon Goddess had played a much more dangerous game.

I hadn't just found an ally. I had found him.