My Groom’s Mistress Tried to Kill Me in a Parking Garage

The champagne flute in my hand was sweating, a cold, slick counterpoint to the suffocating heat rising in the banquet hall. Around me, the rehearsal dinner was a blur of crystal, candlelight, and the cloying scent of white lilies, but the air felt too thin. I pressed a hand to my sternum, willing my lungs to expand against the familiar, constricting band of my asthma. It was a physical tether, a souvenir from a snowstorm years ago when I’d nearly frozen to death saving the man who was currently checking his watch across the room.

River Edwards stood by the open terrace doors, the Seattle skyline glittering behind him like a promise he wasn’t quite keeping. He looked every inch the golden boy I’d grown up with—impeccable tuxedo, charming smile—but the smile didn't reach his eyes. It stopped at his mouth, tight and rehearsed.

I navigated through the crowd, dodging congratulations that felt more like condolences, and reached for his arm.

"River?" I kept my voice low, intimate. "You haven't touched your wine. Is everything okay?"

He flinched. subtle, but there. He pulled his arm away under the guise of adjusting his cufflink. "Not now, Sophia. I have to take this call. Business. It can't wait."

"It's our rehearsal dinner," I said, the tug-of-war beginning. I held my ground, searching his face for the boy I knew. "The partners can wait until Monday."

"The merger doesn't care about weddings," he snapped, his tone sharp enough to cut through the ambient jazz. He turned his back on me, phone already pressed to his ear, walking away without a backward glance.

I stood frozen, the rejection stinging my cheeks. A hand gripped my shoulder—firm, grounding.

"He’s acting like he’s brokering a hostage negotiation, not preparing to say 'I do,'" London murmured, her voice laced with the protective venom she usually reserved for anyone who looked at me sideways. She swirled her martini, her eyes narrowing at River’s retreating back. "Soph, are you sure about this? He's been... off. For weeks."

"He's just stressed," I lied, though the tightness in my chest coiled tighter. "I have his gift. The vintage watch. I’m going to find him, give it to him in private. Remind him why we’re doing this."

London didn't look convinced, but she let me go. "I'll be at the bar. Screaming internally."

I slipped out of the ballroom, clutching the velvet box in my clammy palm. The hallway was dim, the noise of the party fading into a dull roar. I checked the terrace, then the lounge. Empty. Voices drifted from the library, the heavy oak door cracked open just an inch.

I moved to push it open, ready to apologize for interrupting, when a laugh stopped me. It wasn't River’s public laugh—polite and measured. It was his real laugh, loose and arrogant.

"...she has no idea, Mya. She’s so wrapped up in the fairy tale, she wouldn't see a train wreck if it hit her."

My hand hovered over the wood. The air in the hallway seemed to vanish.

"And the switch?" A woman’s voice. Smooth, syrupy. Mya Johnston.

"Logistics are set," River said, his voice dropping, intimate and cruel. "Three days. We let her walk down the aisle, let the anticipation build. Then, we make the announcement. The bride swap. The media will eat it up—a modern twist for the Edwards empire. Sophia is... she’s a placeholder. You know that. I never truly loved her. Not the way I need to love a wife."

The world tilted. I leaned forward, peering through the crack. River was leaning against the mahogany desk, a glass of scotch in hand. Mya stood before him, her hands resting on his lapels. But it wasn't their posture that shattered me.

It was the silver glint at her throat.

The vintage Tiffany necklace. The one River’s mother had worn every day. The one she had promised to me on her deathbed, whispering that it belonged to the woman who held her son’s heart.

Mya ran a manicured finger over the silver charm, smirking up at him. "It looks better on me, don't you think?"

I didn't gasp. I didn't scream. My body simply rejected the oxygen in the room. The hallway spun into a kaleidoscope of shadows. I backed away, my heels silent on the plush carpet, clutching the velvet box so hard the corners dug into my skin.

I ran.

I burst out the side exit into the garden, the cool night air hitting my face like a slap. My lungs seized. The familiar panic set in—the narrowing of vision, the terrifying inability to draw a breath. I fumbled with my clutch, my fingers trembling violently, trying to find my inhaler. It slipped from my grasp, skittering across the stone patio into the darkness.

"No," I wheezed, falling to my knees. I clawed at the stone, black spots dancing in my eyes.

A shadow detached itself from the gloom of the trellis. A man. Tall, broad-shouldered, blending seamlessly with the dark. He didn't rush. He moved with a terrifying, predatory grace.

He crouched before me, his face obscured by the night, and held out a hand. My inhaler lay in his palm.

"Breathe," he commanded. His voice was low, rough like gravel, and devoid of pity. It wasn't a suggestion; it was an order.

I snatched the device, taking a desperate puff. The medicine hit my lungs, the iron band around my chest loosening just enough to let me shudder. I sat back on my heels, looking up at the stranger. I couldn't see his eyes, only the sharp line of a jaw and the silhouette of a suit that cost more than my car.

"You heard them," he stated. Not a question.

Humiliation burned through the cold. "I... I have to go. I have to cancel..."

"If you run now," the stranger said, his tone turning steely, "you remain the victim. You give them the spectacle they want."

He stood up, towering over me, blocking out the light from the venue. "Stand up, Sophia."

I froze. He knew my name.

"Know your worth," he said, the words hitting me harder than the cold wind. "Don't let them see you bleed."

I gripped the inhaler, the plastic biting into my palm. The image of the necklace around Mya’s neck flashed in my mind. The laughter. The 'placeholder.'

Slowly, I pushed myself up. My legs shook, but I locked my knees. I looked at the dark figure, realizing he wasn't offering comfort. He was offering steel.

I wouldn't cancel. I wouldn't give River the satisfaction of a private breakup that he could spin into a public tragedy for sympathy. I would walk down that aisle. I would let him play his hand, and I would be standing tall when the cards fell.

"Thank you," I whispered, my voice raspy.

When I blinked, the stranger had stepped back into the shadows, vanishing as if he had never been there at all.