Blurb：
When Claire notices her husband Ethan's unusual behavior - tolerating his new assistant Sienna's mistakes, taking early flights, and breaking his own rules - she realizes their marriage is crumbling. After eight years together, Claire knows Ethan Hayes better than anyone. But when Sienna smirks from the backseat of their car on their anniversary night, Claire's intuition screams betrayal. This emotional thriller explores marriage, infidelity, and the subtle signs of an affair between a CEO and his assistant. Perfect for readers who love stories about strong female protagonists confronting cheating husbands and manipulative mistresses.Content：
Ethan has never been a morning person.So, for this business trip, when he booked a six a.m. flight, it was more than just unusual. It was a red flag.
I couldn't help but ask him why he'd bought a ticket for such an ungodly hour.
A rare, helpless smile touched the lips of a man who was usually so cool and composed.
"The new assistant isn't very experienced," he said. "She told me the earliest flight was the cheapest."
I took a slow, deep breath, a sudden, chilling clarity washing over me.
This marriage was finally on its last legs.
1
Ethan was never the kind of boss who went easy on people.
On the contrary, he was a notorious perfectionist, with zero tolerance for rookie mistakes.
His last assistant, who had been with him for three years, was exiled to a branch office in Chicago simply for mixing up his coffee order.
But this time, a new assistant's blunder had him waking up at four a.m. for a flight, and all he did was laugh it off.
A delicate string inside me suddenly vibrated with unease.
Then I told myself I was overthinking it.
I knew Ethan. I trusted our eight years together.
Besides, he had always despised incompetence. I figured he'd fire the new girl the second he got back from this trip.
The last day of his trip happened to be our third wedding anniversary.
I'd booked a table at our favorite restaurant a month in advance to celebrate.
But Ethan, whose meetings ended that morning, dragged his return out until he landed just after midnight.
I was dozing off in the driver's seat of our car at the arrivals curb. The moment he pulled open the passenger door, a wave of disappointment washed over me.
"The restaurant is closed," I grumbled. "What took you so long? Was the flight delayed for hours?"
Just as the words left my mouth, the back door opened.
I turned my head. A young, beautiful girl slid into the back seat as if it were the most natural thing in the world. She looked up at me and smiled sweetly.
"Hi, you must be Claire. I'm Sienna, Mr. Hayes's new assistant."
She beamed. "I hope you don't mind me catching a ride. Thanks so much for dropping me home!"
Ethan, now buckling his seatbelt, had an amused smirk on his face. "Ask her," he said, nodding toward the back.
He was answering my complaint.
"Ethan!" the girl whined, drawing out his name and pouting. "Don't tease me! I only booked the red-eye to save the company money!"
I didn't start the car. I narrowed my eyes, my gaze shifting to my husband.
He was looking down at his phone, showing no signs of the fatigue or irritation that usually came with a late-night flight.
My heart sank.
These all seemed like trivial little things.
But after eight years together, I knew Ethan better than anyone.
He was a man who lived by firm boundaries. He hated mixing his professional and personal lives. The company had a generous car service policy, yet even in a downpour, he'd never let an employee hitch a ride.
What's more, Sienna had just committed two major professional sins in the span of a few minutes.
My hands tightened on the steering wheel.
My intuition screamed that there was something unspoken between them, a current of ambiguity that I couldn't ignore.
It felt like a tiny needle pricking my heart, releasing a slow, spreading poison of anxiety.
I lifted my eyes, meeting Sienna's gaze in the rearview mirror.
The smile was still on her face, but beneath the bright surface, there was a flicker of something else—a challenge that only another woman would recognize.
But I wasn't the type to swallow my feelings and play nice.
"Sorry, Sienna. That's not going to work for me," I said, my voice cold as I unlocked the doors.
The smile on her face froze.
She clearly hadn't expected the CEO's wife to be so blunt.
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The End