The low hum of the elliptical machines and the clanking of free weights formed a familiar symphony around Mia as she finished her last set of lat pulldowns. The gym at this hour—just past nine on a Thursday night—was a sanctuary of sorts. Fewer people, less judgment. She could let her mind wander while her body worked. Tonight, however, her mind was anything but wandering in a straight line. It kept circling back to him.
Leo.
He was on the squat rack twenty feet away, his back to her, the broad expanse of his shoulders straining against a form-fitting black tank top. Sweat glistened on the carved lines of his deltoids, and every time he descended into a squat, the muscles in his thighs and glutes coiled with raw, animal power. Mia had been watching him for three weeks now. She knew his routine—legs on Thursdays, chest and back on Mondays, shoulders on Wednesdays. She knew the way he grunted on the last rep, the way he’d wipe his face with a small towel and then crack his neck. She knew the scent of his cologne that lingered when he walked past her, a mix of cedar, bergamot, and something primal.
But what she also knew—what made this a dangerous game—was that he was there with his girlfriend.
And that girlfriend was her.
Mia’s best friend since college, Elise. The woman who had been her confidante, her gym buddy, her partner in crime for margarita nights and late-night talks about everything and nothing. Elise was beautiful in a way that made men stumble over their words and women feel a pang of envy. Long, honey-blonde hair that she tied into a perfect ponytail, toned arms from years of yoga, and a smile that could light up a dark room. When she’d introduced Mia to Leo six months ago, Mia had felt an instant, unwelcome jolt of electricity. She’d buried it, smothered it with loyalty. But like a weed in a garden, the attraction kept pushing through the soil, growing thicker, more tangled, harder to ignore.
Tonight, Elise was on the treadmill, her earbuds in, her eyes fixed on a cycling show on her tablet. She was in her own world, and that left Mia’s gaze free to roam. Leo finished his set and turned around, his chest heaving. His eyes met hers, and for a fraction of a second, something flashed there—recognition, desire, guilt. Then he smiled, that easy, half-crooked smile, and nodded. Mia nodded back, her heart hammering against her ribs. She adjusted the strap of her sports bra and turned away, pretending to be interested in the cable machine.
Why did she feel this way? She had no claim on him. He was Elise’s man, and Elise was her best friend. But the forbidden nature of it—the secret, electric tension that passed between them in stolen glances and accidental touches—was addictive. It made every gym session a tightrope walk, a silent dance of restraint and hunger.
She moved to the leg press, loading a moderate weight. As she sat down, she saw Elise get off the treadmill, grab her water bottle, and walk toward the locker room. She mouthed something to Mia, probably “Be right back,” but Mia’s attention was already elsewhere. Leo had walked over to the dumbbell rack, right beside the leg press. He was close enough that she could smell his sweat, clean and sharp.
“Hey,” he said, his voice low.
“Hey.” She pressed the weight up, her thighs burning.
“You’ve been killing it lately,” he said, leaning against the rack, his arms crossed. “I notice you upped your weight on the lat pulldowns.”
“Yeah,” she managed, feeling the heat creep up her neck. “Trying to build out my back.”
“It’s working.” His eyes traced the line of her spine, visible through her mesh tank top. “Looks good.”
The words hung in the air, heavy with double meaning. Mia finished her set and stood up, grabbing her towel to dab at her face. “Thanks. Your squat form is on point tonight. Deep and controlled.”
He smirked. “You watch me squat?”
Shit. She’d said too much. “I notice good form. That’s all.”
He took a step closer, his body blocking the view of the rest of the gym. “You always notice me, Mia. I’ve seen you watching.”
Her breath caught. “Leo—”
“I watch you too,” he interrupted, his voice a whisper. “Every time. The way you stretch. The way your hands grip the bar. The sounds you make when you push through a tough set.” He paused. “It drives me crazy.”
She should have walked away. She should have laughed it off, said something about Elise coming back, and retreated to the safety of the locker room. But her feet were rooted to the spot, and her body was betraying her, leaning in just slightly.
“This is wrong,” she said, her voice barely audible.
“I know.” His hand reached out, fingertips brushing against her forearm. The touch was electric, sending a shiver up her arm and straight to her core. “But I can’t stop thinking about you. The way your body feels under those gym clothes. The way you look at me when you think I’m not looking.”
“We can’t,” she whispered, but she didn’t pull away.
“Meet me in the sauna after you’re done,” he said, his voice urgent. “In thirty minutes. Just to talk.”
Talk. Right. They both knew what that meant. Or at least, what it could mean. Mia’s mind raced—Elise, her friend, the betrayal—but the ache in her loins was louder than her conscience.
“Okay,” she said.
His smile was brief and wolfish before he turned and walked away, heading toward the cable machines. Mia stood there for a long moment, her skin tingling where he’d touched her. She felt like she was swimming in hot, thick honey. Her hands trembled as she put away the weight plate.
The next thirty minutes were a blur. She went through the motions on a few machines, her eyes constantly scanning the gym. Elise returned from the locker room and did a few sets of glute bridges. Mia chatted with her, laughing at a joke she didn’t hear, nodding at a story she didn’t follow. All the while, her body was on fire, the knowledge of what she was about to do burning in her chest.
Finally, she told Elise she was done. “I’m going to hit the sauna for a quick cool-down,” she said, keeping her voice casual.
“Same,” Elise said, stretching her hamstring. “I’ll join you in a minute. Just want to finish these last reps.”
Mia’s stomach dropped. “Sure. Take your time.”
She walked to the locker room, her heart pounding. The sauna was in a small room adjacent to the shower area—a cedar-lined box with a single bench and a glass door. She stepped inside, the heat hitting her like a wave. She wrapped a towel around herself, her sports bra and leggings still on, and sat down, waiting.
The door opened.
But it wasn’t Leo.
It was Elise.
“Mia! Good, you’re already in here.” Elise slipped off her hoodie, revealing a sports bra and shorts. She sat down next to Mia, sighing. “God, I needed this. My hamstrings are tight.”
Mia forced a smile. “Yeah, it feels good.”
They sat in silence for a moment, the only sound the hiss of the heating element. The air was thick with steam and the scent of eucalyptus. Mia’s skin was slick with sweat, her mind a maelstrom of panic and desire.
Then Elise turned to her, a strange, knowing look in her eyes.
“So,” Elise said, her voice calm, “when were you going to tell me about you and Leo?”
The words hit Mia like a punch to the gut. She opened her mouth, but no sound came out.
“I’m not stupid, Mia.” Elise’s voice was soft, not accusatory. “I’ve seen the way you two have been circling each other for weeks. The lingering looks. The way he smiles at you differently. And tonight, I saw him touch your arm.”
“Elise, I’m so sorry,” Mia whispered, tears pricking at her eyes. “I never meant for it to happen. I love you. You’re my best friend. I—”
“Stop.” Elise put a hand on her knee. “I’m not angry.”
Mia stared at her, confused. “You’re not?”
Elise sighed. “I’ve known Leo for three years. We have an open understanding, but we’ve never acted on it. He’s talked to me about you. How he feels that pull. And I…” She paused, looking down at her hands. “I’ve always wondered what it would be like. To share him. With someone I trust.”
The air in the sauna seemed to thicken, the heat pressing in on them. Mia’s heart was racing for an entirely different reason now.
“Are you saying…” Mia’s voice trailed off.
“I’m saying,” Elise said, leaning closer, her breath warm against Mia’s cheek, “that the door is open if you want it. But only if we’re all together. No secrets. No sneaking around.”
The words were a golden key, unlocking a door Mia had only dared to fantasize about. She looked into Elise’s eyes—kind, fierce, trusting.
“I want it,” Mia breathed.
Elise smiled, a slow, sensual curve of her lips. She stood up, extended her hand. “Then let’s go find him.”
They left the sauna, their towels clinging to their damp bodies. They found Leo in the empty locker room, leaning against the lockers, his arms crossed. He looked up as they entered, his eyes widening slightly at the sight of them together.
“Elise told me,” Mia said, her voice steady now.
Leo looked at Elise, a question in his eyes. Elise walked over to him, wrapped her arms around his neck, and kissed him, deep and slow. Then she pulled back and looked at Mia.
“This is a first for all of us,” Elise said. “Let’s make it good.”
Leo’s gaze settled on Mia, dark and hungry. “Come here.”
Mia crossed the space between them, her heart pounding. Elise took Mia’s hand and guided it to Leo’s chest. His skin was hot, slick with sweat. Elise’s hands found the hem of Mia’s sports bra, lifting it over her head. The air was cool on her breasts, her nipples tightening.
Leo groaned, his hands cupping her face, tilting her head up. He kissed her, and it was nothing like the soft, brief touches they’d exchanged before. It was deep, demanding, his tongue sweeping into her mouth as if he’d been starving for her. Mia melted into him, her fingers curling into his hair. Behind her, she felt Elise press against her back, her hands sliding around Mia’s waist, undoing the clasp of her leggings.
“I want to taste you both,” Elise murmured, her lips brushing Mia’s shoulder blade.
They moved as a tangle of limbs, sweat, and breath. Leo hoisted Mia up onto the bench, and she spread her legs for him. Elise knelt between them, her mouth finding Mia’s core, her tongue a warm, wet promise. Mia gasped,
