The Wife He Cheated on with His Mistress (Her Marriage in Crisis #82)

Prologue

Heather

The lake house is Penelope’s idea.

“A couples’ weekend,” she announced at last month’s foundation dinner, her hand finding Kirk’s arm like it belonged there. “The four of us. No phones, no work, just wine and water and quality time.”

Kirk lit up the way he always does when Penelope suggests something. “That sounds incredible. Heather, doesn’t that sound incredible?”

It sounded exhausting. But I smiled and nodded because that’s what I do, and now here we are, four people in a house built for two couples who actually like spending time together.

The drive up was three hours of Kirk and Penelope in the front seats, trading stories and finishing each other’s sentences while Grayson and I sat in the back like children being shuttled to summer camp.

Every few minutes, Penelope would turn around to include us-“Heather, you have to hear this” or “Gray, tell them about the thing with the boat”-but the conversation always drifted back to the two of them.

By the time we arrived, I’d memorized the pattern of the headrest in front of me.

“It’s gorgeous,” Penelope breathes now, stepping onto the dock. The lake stretches out before us, all golden light and gentle waves, the kind of view that belongs on a postcard. “Kirk, come look at this sunset.”

He’s beside her in an instant, his hand finding the small of her back as they stand at the edge of the water. They look like an advertisement for something, luxury watches, or expensive whiskey, or the kind of happiness that comes with a price tag.

Grayson appears next to me on the porch, a glass of whiskey already in hand.

“She’ll want photos,” he says, his voice low enough that it’s meant only for me. “At least a dozen. Different angles.”

“Kirk will suggest the golden hour lighting.”

“And then they’ll spend forty minutes getting the perfect shot while we...”

“Wait.”

He almost smiles. Almost. “You’ve done this before.”

“A few times.”

We stand in comfortable silence, watching our spouses pose against the sunset. Penelope tilts her head; Kirk adjusts her hair. She laughs at something he says, bright and carrying, and he grins like he’s won something.

They match, I think. Not just in this moment, but always. They’re the same kind of person, magnetic, effortless, the ones who walk into a room and immediately become the center of it.

At parties, they gravitate toward each other like binary stars, feeding off each other’s energy, their laughter harmonizing in a way that makes everyone around them feel like extras in their movie.

Grayson and I are the quiet corners they leave behind.

“How long have you two been married?” I ask, though I already know the answer. I’m just tired of silence.

“Eight years.” He takes a sip of whiskey. “You?”

“Ten.”

“Congratulations.”

“Is it?”

The question slips out before I can stop it. Grayson turns to look at me, really look at me, and for a moment I feel seen in a way I haven’t in months.

“I don’t know,” he says finally. “I’ll let you know when I figure it out.”

Dinner is Penelope’s production.

She’s made something elaborate - sea bass with capers, roasted vegetables, a sauce that required three separate pans - and Kirk has appointed himself sommelier, uncorking bottles and delivering commentary on tannins and terroir like he’s auditioning for a food network show.

“This pairs beautifully with the fish,” he says, pouring a generous glass for Penelope. “Notes of citrus, hint of minerality.”

“You’re so good at this.” She beams at him over the rim. “Grayson never knows what wine to pick. He just grabs whatever’s closest.”

“Because wine is wine,” Grayson says mildly. “It all does the same thing.”

“That’s such a Grayson answer.” Penelope rolls her eyes, but there’s an edge to it. “No romance. No appreciation for the finer things.”

“I appreciate plenty of things.”

“Name one.”

“Silence.”

Kirk laughs - too loud, smoothing over the tension - and redirects the conversation to the boat he wants to rent tomorrow. I push sea bass around my plate and watch the dynamics play out like a dance I’ve seen a hundred times.

Kirk and Penelope: leaning toward each other, touching constantly, building on each other’s energy until they’re practically performing for an audience of two.

Grayson: quiet, watchful, offering the occasional dry comment that Penelope either ignores or deflects.

Me: smiling, nodding, wondering when I became a supporting character in my own life.

“Heather, you’re quiet tonight.” Penelope’s attention swings to me, sudden and focused. “Everything okay?”

“Just tired from the drive.”

“You should have taken a turn at the wheel. Kirk and I could have kept each other company in the back.” She winks at my husband. “We would have found ways to entertain ourselves.”

It’s a joke. Obviously it’s a joke. But something about the way she says it - the casual possessiveness, the assumption that Kirk would prefer her company to mine - makes my stomach tighten.

“I get carsick in the back,” Kirk says, and it sounds like an apology.

“Since when?” I ask.

“What?”

“Since when do you get carsick? We drove to Vermont last fall and you sat in the back the whole way.”

He blinks. “That was different.”

“How?”

“The roads were... straighter.”

Penelope laughs, bright and deflecting. “Heather, you’re so literal. It’s adorable.” She reaches across the table to squeeze my hand. “We should do this more often. The four of us. It’s so nice to actually relax, you know?”

I look at Grayson across the table. He’s watching me with an expression I can’t quite read, something like recognition, maybe. Like he sees the same cracks I’m seeing.

“Sure,” I say. “So nice.”

After dinner, Kirk suggests a bonfire.

“There’s a pit down by the water,” Penelope says, already gathering blankets. “Grayson, grab the marshmallows. Heather, there’s more wine in the cellar.”

She issues orders like a general, and we all fall into formation. That’s how it works with Penelope - she decides, and everyone else executes. Kirk calls it “leadership.” I call it exhausting.

By the time I return with the wine, the fire is blazing and Kirk and Penelope have claimed the good chairs, the ones with cushions, angled toward the water. Grayson is feeding kindling into the flames, his face lit orange and gold.

I settle onto the wooden bench nearby. It’s harder than it looks.

“There’s room over here,” Kirk offers, gesturing vaguely toward his chair.

“I’m fine.”

“You sure? It’s warmer by the-”

“I’m fine, Kirk.”

Something flickers across his face - annoyance, maybe, or confusion - but Penelope is already pulling him into conversation about the foundation gala next month, and the moment passes.

Grayson sits down on the bench beside me.

Not close. Not touching. Just... present.

“She’s already planning your outfit,” he says quietly, nodding toward where Penelope is gesturing emphatically at Kirk. “Probably his too.”

“Let me guess - she thinks I should wear something brighter.”

“She thinks you hide in neutrals.”

“I like neutrals.”

“I know.” He takes a sip of his drink. “I do too.”

We sit in silence, watching the fire, listening to Kirk and Penelope debate whether the gala theme should be “Old Hollywood” or “Modern Elegance.” Their voices weave together seamlessly - interrupting, building, laughing at jokes that don’t seem to include us.

“Can I ask you something?” Grayson’s voice is low, meant only for me.

“Sure.”

“Do you ever feel like you married someone you don’t quite understand?”

The question lands like a stone in still water.

“Yes,” I say, before I can think better of it. “All the time.”

“Me too.”

We don’t look at each other. Don’t acknowledge the weight of what we’ve just admitted. We just sit there, two quiet people on a hard bench, while our bright, magnetic spouses light up the darkness without us.

Opposites attract, my mother used to say. You need someone to balance you out.

Kirk balanced me out. He was everything I wasn’t, confident, charming, effortlessly social. I fell in love with the way he made me feel visible, like his light was bright enough for both of us.

But lately, I’ve started to wonder if I’m just standing in his shadow.

And from the look on Grayson’s face, I think he might be wondering the same thing.

That night I wake at 2 a.m. to an empty bed. Kirk’s side is cold.

Somewhere below me, faint through the floor, something that might be voices. Low. Two of them, maybe. Or the wind off the lake, or the old pipes ticking as the house cools the way old houses do.

Kirk couldn’t sleep, probably. He never can in a strange bed. He’s downstairs raiding the fridge, or out on the porch with his phone, doing the thing he does where he answers work emails at hours no one should be awake.

I think about going down. Then I think about how far the stairs are, and how warm the blankets are, and how I’d just be standing in a dark kitchen watching my husband eat cold sea bass.

So I roll over and close my eyes, and by the time his footsteps finally come up the stairs, I’m half asleep again.