Cruise With Sis - Cover

Cruise With Sis

Copyright© 2026 by Axad Artin

Chapter 2

Action/Adventure Sex Story: Chapter 2 - Getting dumped by girlfriend on a cruise is usually a terrible thing to happen. But his sister suffered the same and things weren't bad at all anymore.

Caution: This Action/Adventure Sex Story contains strong sexual content, including Ma/Fa   Consensual   Fiction   Cheating   Incest   Brother   Sister   Oral Sex  

Monday, Cozumel

When the alarm woke us, the ship was already docked in Cozumel. We quickly got dressed and joined James and Caitlynne in the hallway. The four of us went up to one of the dining areas for a fast breakfast. I held Karen’s hand the whole way up. I hoped it was a good sign but was doubtful. During the walk and breakfast, James gave me a roll-by-roll recount of his evening at the craps table. I wanted to talk about something else, but couldn’t manage the energy to try to change the subject. At breakfast, Karen watched James adoringly as he babbled on about come-out rolls and pass line bets.

We disembarked, walked down the pier, and found where we were to wait for our excursion. Karen held my hand while talking gaily with James. Two white vans picked up the groups for our excursion. A family of four rode with us. James was full of energy and kept talking and talking. Karen and Caitlynne chimed in occasionally. I didn’t say anything.

“You’re awfully quiet this morning,” Caitlynne said to me in one of the few gaps in the conversation. “You okay?”

“I’m fine. Not much to say.”

Our excursion was riding ATVs through the jungle. It was fun, racing through the bushes at top speeds. We took regular breaks during the ride to see underground caves, sinkholes, and Mayan ruins. Every time we stopped, Karen looked for James as soon as she had her helmet off.

After the ride was over, we were taken to a beach club for swimming and snorkeling. Once we were out of the van, James and Karen raced to the changing rooms. Caitlynne followed them. I found a shady spot where I could see the changing rooms and the beach. James came out first in his swimsuit and went to the women’s changing room. Karen came out in her one-piece and they jogged together, laughing, towards the beach. A minute later, Caitlynne came out in her bikini and walked towards the beach. When she got there, I could see her look for me. She said something to Karen and Karen looked around as well. Caitlynne finally spotted me and walked back to where I was standing.

“What are you doing here? Why haven’t you changed?”

“I’ve lost Karen to James.”

“What bullshit is this?”

“I’ve lost Karen to James. If it wasn’t true, then why are you the one here talking to me and Karen is the one at the beach with James?”

Caitlynne gave me a look. Concern? Dread? I couldn’t read it. “I’ll have Karen talk to you.”

Caitlynne went down to the beach. Karen and James were swimming around, talking and laughing. Caitlynne got Karen’s attention and they talked for a little bit. Karen got out of the water and walked up to my spot. She kept her head down most of the walk.

“What’s up?” she said.

“Karen, it’s time for you to choose who you’re going to be with on this cruise. Me or James.”

Her eyes went wide. “Umm ... Let me go get Caitlynne and James.”

She jogged back to the beach, got James and Caitlynne, and all of them returned to my spot. Caitlynne was asking questions on the way but got no answers. As they approached, I looked at their faces - Karen looked in pain, Caitlynne was worried, and James was smiling.

“James and I didn’t tell you a few things when everyone met,” began Karen. She was looking down at the ground. “We never broke up when we graduated. We said we were merely separating for a little while, and if we were meant to be, God would bring us back together. We belonged to the same church at OU, and faith is so important to me. When God brought us back together, I fell in love all over again.” She finally looked up at me. “I’m sorry, Thomas. I told you once that I didn’t love you. It was because I was still in love with James. He was my first love and my true love. I’m sorry to end our relationship like this.”

She reached out her hand to James. His smile got even bigger as he took it. I didn’t know what to say, so I said nothing. Karen looked at me one last time, then turned back towards the beach. She and James walked off hand-in-hand.

Caitlynne watched them leave. “The asshole! The bitch!” She turned to me. “Aren’t you going to do something?”

“Do what?” I felt like a ten-ton weight had fallen on me. Every fiber of my soul ached in misery.

“Go beat the shit out of him.”

“That won’t get me back, Karen. All it would do is make things worse.”

“I’m going to...” said Caitlynne as she moved towards the beach.

“Don’t,” I said quietly. I didn’t have the energy to speak any louder. Caitlynne turned towards me. “A lunch is included. Let’s go eat.”

We walked to the snack bar and ordered our food - a hot dog, fries, and soda each. The dining tables were placed where they had a fine view of the beach. We ate standing on the side of the building where we couldn’t see the beach. I could tell Caitlynne was fuming. I guessed she wanted to confront James and Karen, but thankfully, she stayed with me. I was afraid the misery would overwhelm me if she left me.

After we ate, we walked back to where the van was parked and kept it between us and the beach.

“How’s this going to work?” asked Caitlynne. “I’m not sleeping in the same cabin as that asshole.”

“James and I will switch cabins. Once we do, I don’t want to see them again.”

Our time at the beach club was over. Our driver came to the van and unlocked it. Caitlynne and I got in and sat in the back seat. The family got in next. James and Karen came last, smiling and holding hands. They got into the seat in front of us.

Once they were seated, Caitlynne leaned forward and talked quietly to them, mapping out our separation. She assigned each couple different pools and different dining rooms. Caitlynne and I were to use the fitness center anytime before dinner, and they had it after. James and Karen were to make new excursion plans. If James and Karen saw us in the hallway, they were to turn around and go the other way. Caitlynne did this with a quiet voice filled with venom. James and Karen agreed to everything Caitlynne said. Good ol’ practical Caitlynne - I never would have been able to think of all the details she did.

Once Caitlynne was done, she sat back next to me. I felt like I was in a huge fog. Karen and James faced forward. James put his arm around Karen’s shoulders. If Karen had put her head on his shoulder, I think I would have burst out crying. Karen grabbed James’s hand and pulled it down to the seat next to her. Her discomfort with public displays of affection hadn’t been a huge lie.

The rest of the day was a blur. Misery completely shut down my brain. Caitlynne left me sitting in a chair in a quiet room on board the ship for I don’t know how long while she made the room change happen, but otherwise stayed with me the whole time. We spent most of the time walking around the deck. The whole day, my entire relationship with Karen ran through my head in a loop. Prior to this cruise, I had been so certain that we were in love, would marry, and live happily ever after. What had I missed? Caitlynne probably talked to me at some point, and if so, I didn’t respond. I know I ate something that day, but I can’t say what. I don’t think I cried - I was too numb.

I broke out of the mental fog late that night when Caitlynne blamed herself for my break-up with Karen. We were at the stern, watching the wake. “I’m sorry, Thomas. I shouldn’t have kept gambling with them Saturday. He started pulling her away from you then. And I definitely shouldn’t have kept gambling with them last night.”

“Don’t worry about it.” Caitlynne gave a little gasp of surprise at my speaking. “It wouldn’t have mattered.” I turned to face her. “You heard her - she was in love with James before he stepped on the ship. Once they met up, it was only a matter of time.”

“If they hadn’t spent that time gambling...”

“What? They might have dumped us tomorrow instead of today? Would that be an improvement?”

“No...”

“Then let it go. It was their choice. Nothing we could have done would have changed their minds.” I turned back to the railing and looked out at the wake again. “The one thing which might have made a difference is if I had gone to church with Karen.”

“Did you ever go to church with her?”

“Once. It was awful. The sermon was all judgmental and condemning. Jesus loves those who hate what he hates. The stuff that turned me off of religion.” I turned away from the railing. “Let’s go to bed. Let’s put an end to the worst day of my life.”

We headed back to the cabin. The pain and misery enveloped me, but now weren’t overwhelming. I noticed for the first time what Caitlynne was wearing - black short shorts and a clingy black blouse with thin straps on top, which nicely showed off her broad shoulders and also exposed her midriff. Was James really willing to give up this hot woman?

Stupid thought. There’s a lot more to a relationship than good looks, and James’s relationship with Caitlynne had been coming to an end. He bailed out to get another pretty girl rather than wait for Caitlynne to dump him. Unfortunately, the other pretty girl had been my girl.

“Thanks for staying with me. I don’t know how I would have survived today without you.”

“You’re my brother. I love you. You would have done the same for me. And I needed someone to be with, too.”

I had been so focused on myself that I hadn’t thought about how Caitlynne was probably hurting as well. She hadn’t been as serious with James as I had been with Karen, but it always hurts to get dumped.

We went to my old cabin. I guessed because I was unable to move my stuff, Karen and Caitlynne had switched cabins. Once we got in the cabin, we got a nasty shock - the bed was made up as one large bed. We hadn’t told anyone that we would need two singles in our cabin from now on.

“I guess we’ll be sleeping together tonight,” said Caitlynne. “I hope you don’t move around a lot.”

“I sleep like a log. I won’t be any problem.”

I hadn’t brought any pajamas as I always slept nude with Karen. My mind slowly worked out that I should wear my workout shorts to bed. I grabbed them.

“I’ll brush and change in the bathroom while you change out here,” I said.

I brushed my teeth, took off my clothes, and put on my shorts. What does Caitlynne wear to bed? She always wore night shirts at our parents’ house, but she might wear something different on her own. I hoped she didn’t sleep naked.

When I got out of the bathroom, Caitlynne was wearing a shiny white night shirt - and balling her eyes out.

“Another fucking cruise ruined,” she wailed. I moved towards her. “And they aren’t going to give me a voucher for this disaster. Cruises should be so damn fun for me, and they’re keeping turning out awful.” I put my arms around her. “I’m cursed.”

“You’re not cursed.”

“It doesn’t fucking matter. This is the last fucking cruise I can take for a long time. The last fucking nice vacation. I’m up to my eyeballs in debt. My girlfriends from college are going to laugh their asses off when they hear about how this cruise turned out.”

Caitlynne swung around to face the wall where Karen and James’s cabin was and raised a fist.

“And I am SO,” she pumped her fist, “FUCKING”, another pump, “PISSED”, a huge pump, “at that lying sack of shit.” Caitlynne spun back to me. “We fucked three times yesterday. Morning, nap time, and bedtime. At nap time, I asked him what was going on between him and Karen, and he said,” Caitlynne changed her voice to a goofy male tone, “nothing, just being nice to an old friend.” Caitlynne’s tears had stopped, and her face was now flushed with anger. “He told me how hot I had looked in my bikini. How he was so happy to be away from Karen and with only me. Then at bedtime, I was pissed as hell, but he was so fucking smooth. He cracked jokes about Karen wearing a one-piece. He told me about how awful she had been at sex. He told me how much more beautiful I was than Karen. I swallowed it all. He had me feeling like the most wonderful woman in the world.”

Then her face got more screwed up in anger, and her voice raised to a yell, “Today, does he have the balls to say anything to me?! At least Karen said she was sorry! At least she explained why she dumped you! All that fucking asshole did was smirk! I have never felt SO FUCKING USED!”

She paused to catch her breath. “If you hadn’t stopped me,” she said in her normal voice, “so help me God, I was going to beat the living shit out of him. I was going to give him an ass whooping he’d never forget.”

As angry as Caitlynne was, I think she could have. She was as big as James and had bigger muscles. Part of me seriously regretted stopping her as I couldn’t imagine a guy more deserving of getting his ass kicked.

“You know what the worst thing is about this fucking disaster?” Caitlynne continued. “We’re paying for their love nest. We’re paying for their shore excursions. They are going to have a damn great time on our dime. God, I want to put a life preserver on both of them and throw them off the fucking ship.”

She sat there panting. It was like she had held her feelings in as long as she was caring for me, then exploded.

I don’t get angry and I wasn’t - it would be pointless. We couldn’t kick them off the ship. If Caitlynne had beaten the crap out of James, nothing would have changed. I strongly believed that success was the best revenge, but I didn’t see how I was going to get revenge in this case as Karen was everything I wanted in a woman.

“Caitlynne, this cruise isn’t going to be a disaster. We’re going to have a good time in spite of it all. We get along great. This is going to be like a family vacation on steroids. And you want to dance? I’ll dance your ass off tomorrow night. And every night after. We won’t have a great time, but we’ll have a really good time.” I gripped her hands. “Does that sound like a plan to you?”

She gave me a little smile. “That sounds fine.”

“Good. It’s my mission now to see that you’re happy.” If I had a mission, I had a purpose. If I had a purpose, then I had meaning in my life. I had had no meaning in my life when I walked in the cabin door. “Anything I can do - anything - tell me. Okay?”

Her smile got a little bigger, then she gave me a smirk. “You think you can dance my ass off?”

“I’m in pretty good shape. I’m certainly willing to try.”

“Okay. Let’s see who outlasts who tomorrow night.”

I was glad to see a little sparkle in her eyes.

“It’s late,” I said. “We don’t want to miss the excursion in the morning. Let’s get to sleep.”

Caitlynne brushed her teeth and came back. I turned off the lights, and we got under the covers. I was on my back, and she was on her side facing me.

“Thanks for everything, Caitlynne. I love you.”

“I love you too, Thomas. Will you hold my hand, please?”

“Certainly.” I reached out and held her hand. “Good night.”

“Good night.”

As I lay there, I thought about what I owed Caitlynne. The summer after my sophomore year, I had turned 21, and Caitlynne had found a bar with dancing which would “misread” the driver’s licenses of her and her friends and let them in. I had wound up as the designated driver. I hadn’t known how to dance or talk with girls. Caitlynne had taught me. She had shown me dance moves and had taught me how to react to my partner. She had worked on my conversation skills. She had done weight workouts with me.

 
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