Cover of Cruise Ship Couple's Cruise with Sister

Cruise Ship Couple's Cruise with Sister

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Kate's boyfriend breaks up with her right before they go on a cruise. She has 2 tickets for a 7 day couple's Christmas cruise. She can't refund the tickets so she tries to invite a bunch of different guys she knows. They all turn her down because the cruise it just too long. Her parents remind her that her brother might be available. Kate is not sexually attracted to her brother at all. The idea of bringing him on a couple's cruise seems weird, but she offers him anyway because the tickets will go to waste otherwise. He reluctantly accepts. They go on the cruise and by day 10 they are having sex. They slowly get used to each other as the days pass and realize they are sexually attracted to each other. Day 1 they just watch the other. Day 2 morning wood. Day 3 mutual masturbation on Christmas eve. Day 4 oral sex Christmas gift in morning. meet other couple and kissing in evening. day 5 they meet other couple again and swap partners to have sex, but they only watch each other. Day 6 they have oral sex, try and resist having sex. day 7 they have sex.

Chapter 7: Christmas Eve Confessions

The gym showers were empty. Josh stood under a stream of water so cold it made his teeth ache, his skin prickling into gooseflesh. He’d scrubbed until his chest was pink and raw, but the feeling wouldn’t leave. It was a phantom sensation, a memory in the nerves: the shocking, slick heat of her, the involuntary convulsion of his own body, the warm proof soaking the linen.

He braced his hands against the tile, head hanging, water sluicing through his hair. He tried to summon disgust, horror, anything clean and sharp. Instead, his traitorous mind replayed the gasp she’d made, the way her whole body had trembled against him. A low groan escaped him, lost in the drumming water. He was exhausted, frayed, but a stubborn, shameful part of him was still awake, thick and heavy between his legs. He glanced down. “Still?” he muttered to himself, a harsh, disbelieving laugh echoing in the stall. He turned the knob to pure cold. The icy blast was a violence, shocking his system, finally killing the last of the physical echo. The guilt, however, settled deeper, a cold stone in his gut.

When he returned to the cabin, the air was thick with the scent of perfume and hairspray. Kate stood by the balcony door, a silhouette against the twilight sea. She wore a red satin dress that was neither long nor particularly short, but it clung to every slope and planes of her body like a second skin. The fabric gleamed under the cabin lights. Her hair was swept up, a few blonde tendrils brushing her neck.

She turned. Her smile was a practiced, glossy thing. “You’re back. I was about to send a search party.”

“Took a while,” he said, his voice rough. He kept his eyes on her face, on the unfamiliar swipe of dark liner around her eyes. She looked like a stranger. A beautiful, brittle stranger. “You look… dressed.”

“It’s formal night. In the main dining room. We have to be seen, remember? Happy, married, and seen.” She picked up a small beaded clutch, snapping it shut with a definitive click. “Our table assignment came. We’re with another couple. Maria and Javier.”

“Great.” The word was flat. The idea of making small talk felt Herculean.

They walked to the dining room in a silence that felt manufactured, a mutual agreement to pretend the last few hours were a shared bad dream. The grand staircase, the sparkling chandeliers, the murmur of a hundred conversations—it all felt like a set they were poorly acting upon.

A waiter led them to a table for four by a window. The other couple was already there. Maria was a vibrant woman with a cascade of dark hair and a smile that seemed to know secrets. Her husband, Javier, was tall, with a confident ease that filled his chair. He stood as they approached.

“Ah, the newlyweds!” Maria said, her voice warm. “We were hoping we’d get some interesting tablemates. I’m Maria, this is Javier.”

Handshakes were exchanged. Josh’s felt clumsy. Kate’s smile dialed up to blinding. “I’m Kate, this is Jake. So nice to meet you!”

They sat. The menus were vast, but Josh couldn’t focus on the words. He was acutely aware of Kate’s knee, just inches from his under the table. The red satin of her dress whispered whenever she moved.

“So, how long have you been married?” Javier asked, pouring wine for the table. His accent was smooth, his eyes appraising.

“Six months,” Kate said instantly, the lie fluid. She reached over and patted Josh’s hand on the tablecloth. A performative touch. His skin burned where she made contact. “Still in the honeymoon phase, really.”

“It shows,” Maria said, her gaze lingering on the space between them. “There’s a certain… electricity. You can always tell.”

Josh took a large gulp of water.

The first course arrived. Conversation meandered—the ship, the ports, a show they’d all seen. Maria and Javier were effortlessly tactile. Her hand on his arm to emphasize a point. His fingers brushing a crumb from her lip. Each touch was casual, proprietary, a public claim. Josh found himself watching them, not with envy, but with a kind of clinical fascination. This was what they were supposed to be mimicking. A natural, easy possession.

He and Kate were a statue of a couple, careful inches apart.

“You two must be enjoying the couples’ activities,” Javier said, his eyes crinkling. “We saw the list. Some of them looked quite… involved.”

Kate’s fork clinked softly against her plate. “Oh, they’re something else. Very… therapeutic.”

“We did the massage,” Josh heard himself say. He needed to sell it, to control the narrative. “It was intense.”

Maria leaned forward, intrigued. “The dual one? We considered it. Was it awkward? Being so… exposed with someone, even your spouse?”

The question hung in the air, sharp as a pin. Kate laughed, a high, tinkling sound that didn’t reach her eyes. “A little at first! But you just lean into it, you know? It’s about trust.”

“Trust is the foundation,” Javier agreed, his hand settling on the small of Maria’s back, a slow, absent stroke. “And sometimes, those structured experiences… they can unlock things. Remove barriers.” His gaze slid from Kate to Josh and back. “You look like you’re in excellent shape. Both of you. Do you work out together?”

“Sometimes,” Josh mumbled, staring at his seared scallop.

“We should hit the gym tomorrow,” Javier said, his tone shifting to masculine camaraderie. “Early. See what you’re made of, Jake.”

The use of his fake name jarred him. “Sure. Yeah. Maybe.”

As the main course was cleared, the dynamic shifted. The wine had flowed. Maria’s flirtatiousness, which seemed a general part of her personality, began to narrow, focusing like a beam. She asked Josh about his work, listening with a tilted head, her foot brushing his ankle under the table. He shifted his leg, assuming it was an accident.

A moment later, he felt it again. A deliberate, slow slide of her foot against his calf.

He froze. Across the table, Javier was telling Kate a story, his hand now resting on the back of her chair, his fingers playing with a strand of her hair that had escaped its updo. Kate was laughing too loudly, her shoulders tense. Javier’s touch was possessive, testing.

It was a mirror, but a distorted one. Maria and Javier moved with a hungry, practiced synergy. They weren’t just touching their own partners; they were probing, testing the boundaries of the new couple at their table. It felt less like flirtation and more like a game of psychological chess.

“You have very thoughtful eyes, Jake,” Maria said, her voice low under the cover of Javier’s story. “Quiet. I bet you notice everything.”

Josh’s mind flashed to the spa—the exact shade of panic in Kate’s eyes, the bead of sweat tracing her temple. He noticed too much. “Not really.”

“Modest.” She smiled, sipping her wine. Her foot retreated. “It’s refreshing. So many men are just… noise.”

Javier’s story ended. His hand was now fully on Kate’s bare shoulder, his thumb making a slow, circular motion on her skin. Kate had stopped laughing. She was perfectly still, a rabbit in headlights, her eyes darting to Josh.

A cold, clear anger cut through Josh’s fog of guilt and discomfort. This was different. This was an invasion.

“The dessert menu,” Josh said, his voice louder than intended. He reached across the table, not for a menu, but to gently, firmly remove Javier’s hand from Kate’s shoulder. He placed it back on the tablecloth by Javier’s own plate. “We should look at it. Kate loves chocolate.”

The action was blatant. A direct, quiet claim. The table went silent for a beat.

Javier’s eyebrows rose, then he chuckled, a low, unoffended sound. “Of course. My apologies. Got carried away. Your wife is a captivating storyteller.”

Kate exhaled shakily. Under the table, her knee found his. This time, it wasn’t an accident. It was a press, a silent thank you, a lifeline. He didn’t pull away.

Maria watched the exchange, her eyes gleaming with renewed interest. “How protective,” she purred. “It’s sweet. Really. That kind of… spark. It’s rare.”

Dessert was a blur of chocolate torte and forced politeness. The goodbyes at the table were cordial, with promises to meet at the gym that everyone knew were hollow.

Outside the dining room, the ship’s atrium buzzed with music and crowds. Josh and Kate walked without speaking until they were away from the main thoroughfare, in a quieter corridor lined with portraits of old ocean liners.

“His hand was on me,” Kate said finally, her voice thin. “He just… put it there. And I didn’t know how to make him stop without causing a scene.”

“I know.” Josh’s fists were clenched in his pockets. “They were playing a game.”

“What game?”

“I don’t know. Swapping? Flirting? Seeing if they could crack us.” He leaned against the wall, the cool glass of a porthole against his back. “Maria was doing the same to me. Under the table.”

Kate’s eyes widened. “Are you serious?”

“Deadly.”

She hugged herself, the red satin tightening across her chest. “So what do we do? Avoid them for the rest of the cruise?”

“Probably.” He looked at her, really looked, past the dress and the makeup. She looked young, and tired, and scared. The brittle, performative wife was gone. This was just Kate, his sister, in over her head. The protective anger he’d felt at the table solidified into something simpler, clearer. “You okay?”

She gave a weak shrug. “Just feels like we’re swimming with sharks. And we’re covered in blood.” She paused. “Thanks. For what you did.”

He nodded. A group of laughing passengers rounded the corner, forcing them to stand closer together in the narrow hall. Their shoulders touched. Neither moved away.

“The wrap…” Kate started, then stopped. She studied the patterned carpet.

“We don’t have to talk about it,” he said quickly, the cold stone of guilt back in his throat.

“We kind of do.” She took a breath. “It happened. Our bodies… reacted. It was a messed-up situation. If we don’t talk about it, it becomes this huge, weird monster hiding in our room. So. It happened. It was gross and confusing and we never speak of it again. And we definitely, definitely don’t let anything like that ever happen again. Deal?”

He heard the desperation in her voice, the need to box it up, label it, and throw it overboard. He wanted that too. More than anything.

“Deal,” he said, the word feeling like a lie and a salvation at the same time.

“Okay.” She nodded, as if convincing herself. “Okay. So we’re good. Just two siblings, surviving a cruise. No monsters.”

“No monsters,” he echoed.

From a nearby speaker, a cheerful announcement crackled to life. “Good evening, ladies and gentlemen! For our night owls, the ‘Neon Nightclub’ on Deck 12 is now open! Come dance the night away under the stars to hits from the 80s, 90s, and today!”

Kate’s forced composure cracked, revealing a glimpse of the girl who’d dragged him on this trip. “Oh, I love 90s pop. Remember all those dumb dances we’d do in the living room?”

A ghost of a smile touched his lips. “I remember you forcing me to be your backup dancer.”

“You were terrible.” She grinned, and for a second, it was real. “We should go. Just… be normal people. Not a married couple. Not prey for weird swingers. Just… us. Getting a stupid overpriced drink and laughing at the music.”

It was the worst idea he’d ever heard. It was also the only idea that felt remotely like oxygen. To be in a crowd, with noise and darkness, where they didn’t have to be anything for anyone.

“One drink,” he said.

“One drink,” she agreed.

She looped her arm through his, a sisterly, familiar gesture. It felt both comforting and, now, like a layer of camouflage. They moved towards the elevators, two blonde heads in the crowd, their steps syncopated, their private monster temporarily caged by the beat of the music thrumming through the ship’s bones.

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