My world used to feel so safe.
I built it brick by brick with Mark.
We had the house, the dog, the Sunday brunches with family.
Lately, something felt off.
A coldness had crept into our bed, into our conversations.
He’d started working longer hours, or so he said.
His phone was glued to his hand, always face down.
He’d become distant, preoccupied, his eyes often somewhere else.
I tried to ignore the gnawing feeling in my gut.
“You’re just overthinking,” I’d tell myself.
But the little things kept adding up.
A faint, unfamiliar perfume on his shirt one morning.
A text message notification I glimpsed, quickly swiped away.
The way he’d jump if I entered a room unexpectedly.
The lies started small, almost insignificant.
"Just a client call," he'd mumble.
"I'm exhausted from work," he'd explain away his lack of intimacy.
My sister, Emily, had been staying in our guest house for a few weeks.
She said she needed a quiet place to focus on her online courses.
It was a separate little cottage, just across the yard.
We'd offered it without a second thought, happy to help family.
I thought nothing of it then.
Emily was my younger sister, my confidante, my best friend.
How naive I was.
One Tuesday night, I couldn't sleep.
Mark had said he was working late in his office, downstairs.
But I heard a soft click of the back door.
My heart pounded in my chest.
I crept out of bed, my feet silent on the cold wood floor.
I peeked down the stairs.
Mark was slipping out, a dark silhouette against the moonlight.
He wasn't going to his office.
He was heading towards the guest house.
Every fiber of my being screamed at me to stop.
To go back to bed and pretend I hadn't seen.
But the truth, ugly as it might be, felt inevitable.
I pulled on my robe, my hands shaking.
I followed him, keeping to the shadows of the large oak trees.
The guest house lights were off, which struck me as odd.
He opened the door slowly, carefully.
He disappeared inside.
I waited, my breath hitched in my throat.
A dim light flickered on within, just enough to cast shadows.
I crept closer, my heart a drum against my ribs.
I peered through a gap in the blinds of the main living room window.
What I saw paralyzed me.
Mark was standing there, holding someone.
A woman.
My mind raced, struggling to process.
It couldn't be.
It was impossible.
He held her close, his head bent to hers.
Then she shifted slightly.
Her face came into view, bathed in the soft glow from an unseen lamp.
It was Emily.
My sister.
My best friend.
She was laughing, a soft, intimate sound.
Mark pulled her closer still, his hand caressing her hair.
The world tilted on its axis.
The air left my lungs in a ragged gasp I didn't even know I made.
My knees buckled.
