The Day I Caught My Boyfriend Cheating, His Mistress Recognized the Car in My Driveway

The security alarm began with a sharp electronic tone.

Then it rose into a steady, piercing sound that carried across the backyard and beyond the tall iron fence.

Marcus flinched.

Brianna pressed her hands over her ears.

I stood beside the wall panel, my arms at my sides, watching the gate indicator change from red to green.

The system was designed to alert the household and activate the property's entry sequence. I had used it dozens of times when deliveries arrived or guests needed access.

This time, I watched the driveway gate begin to open.

Marcus stared at me.

“Turn that off!””

I didn't move.

“Lauren, I'm serious!””

“So am I.””

He climbed out of the pool and reached for a towel. Water streamed from his arms onto the stone deck. His eyes darted toward the fireplace, where his clothes were beginning to scorch, then toward the open gate.

Brianna stood near the pool steps, still wrapped in her towel.

“Marcus,” she said, her voice tight, “why is she opening the gate?””

“I don't know.””

“You live here.””

“Not now, Brianna.””

She stared at him.

“You told me she didn't control the security system.””

I slowly turned my head.

Marcus shut his eyes.

There it was again. Another little piece of the truth escaping before he could stop it.

“Interesting,” I said.

He rubbed both hands over his face.

“Lauren, please. Can we talk privately?””

I glanced toward the neighbors appearing beyond the fence.

An older man in a gray polo had stepped onto his driveway. A woman in workout clothes stood beside him, looking toward the alarm with visible concern. Across the street, another resident emerged from a front door.

No one was filming. They were simply trying to understand why a security alarm was screaming from the backyard of a house that usually remained quiet.

I looked back at Marcus.

“You were perfectly comfortable making this situation public when you thought I wouldn't find out.””

“That isn't fair.””

“Fair?””

I took one step toward him.

“You brought another woman into my home. You kissed her in the pool I paid to have renovated. You left your clothes beside mine, as if you couldn't even be bothered to pretend I existed.””

Marcus lowered his voice.

“I made a mistake.””

“One mistake?””

“Yes.””

“How many times?””

He hesitated.

I felt the silence land between us.

“How many times, Marcus?””

He glanced at Brianna.

She looked away.

That tiny movement told me more than his answer could have.

I nodded slowly.

“Right.””

“Lauren, it wasn't supposed to happen like this.””

I stared at him.

“Then tell me how it was supposed to happen.””

He swallowed.

“We were going to talk.””

“When?””

“Soon.””

“Before or after you finished kissing her?””

His jaw tightened.

“Stop twisting everything I say.””

I almost admired the speed with which he could turn himself into the injured party.

Almost.

Brianna pulled the towel more tightly around her shoulders and moved toward the chair where a spare cover-up rested. She kept her eyes on the driveway.

“I should leave,” she said.

Marcus turned on her.

“Don't make this worse.””

She let out a disbelieving laugh.

“Make it worse? You told me you were practically single.””

I stared at him.

“Practically?””

Marcus pointed at her.

“Brianna, enough.””

“No. You said you were sleeping in separate rooms. You said Lauren knew the relationship was over.””

For a moment, the alarm seemed to fade beneath the blood pounding in my ears.

Separate rooms?

Marcus and I had shared the same bedroom the night before. He had fallen asleep with one arm around my waist. Before getting out of bed that morning, he had kissed my cheek and asked whether I could pick up his favorite coffee.

I had thought we were happy.

I had thought we were building something.

“You told her I knew?”” I asked.

Marcus stepped toward me.

“Lauren, I was trying to protect everyone.””

“From what?””

“From getting hurt.””

I looked down at my hands.

A faint strawberry stain remained on my thumb.

“That's interesting,” I whispered.

“Because I'm standing here, and I'm pretty sure I'm the one getting hurt.””

For the first time, he seemed unable to maintain eye contact.

The gate continued opening.

Its motor groaned softly, revealing more of the driveway beyond the garden. The driveway ran along the far side of the property, separated from the pool deck by a hedge and a low stone wall.

Then I heard an engine.

Not the quick rev of a delivery van or the familiar rumble of one of our neighbors pulling into a garage.

This engine was deep and controlled.

A black Cadillac SUV appeared beyond the open gate.

It moved slowly into the driveway, sunlight sliding across its polished hood.

Brianna went completely still.

Her fingers loosened around the towel.

Marcus noticed.

“What?”” he asked.

She didn't answer.

The SUV passed the entrance pillars and continued along the driveway, remaining well away from the pool and patio.

I watched it approach.

The windows were tinted. The bodywork was spotless. There was nothing extraordinary about the vehicle itself, yet the sight of it seemed to pull every ounce of color from Brianna's face.

She took a step backward.

Marcus looked between her and the car.

“Brianna?””

She shook her head once.

“No.””

“What do you mean, no?””

She stared at the Cadillac as though it had emerged from a nightmare.

I folded my arms.

“Do you know that car?””

Brianna's lips parted, but no sound came out.

Marcus moved closer to her.

“Brianna, answer me.””

She backed away from him.

“Don't touch me.””

He stopped.

The SUV slowed near the far end of the driveway, still separated from us by the garden wall and a wide stretch of paving.

Its brake lights illuminated.

Then it stopped.

The alarm continued ringing.

Somewhere beyond the fence, the man in the gray polo called out to ask whether everything was all right. His voice was distant and indistinct beneath the alarm, and nobody answered.

I barely noticed him.

All my attention was on Brianna.

She was no longer embarrassed about being caught in a stranger's pool.

She wasn't looking at me.

She wasn't looking at Marcus.

She was staring at the Cadillac with the expression of someone who had just realized that a lie had finally caught up with her.

“Who is in that car?”” I asked.

Brianna swallowed hard.

Marcus grabbed the towel from the chair and wrapped it around his waist.

“Lauren, listen to me. Whatever happens, don't jump to conclusions.””

I turned toward him.

“You have got to be kidding.””