Cruise With Sis
Copyright© 2026 by Axad Artin
Chapter 5
Action/Adventure Sex Story: Chapter 5 - 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
Caitlynne and I were naked in bed. Dancing hadn’t been as much fun tonight as it had been, partly because it was getting old and partly because we were both sad that the cruise was coming to an end. Our post-dancing sex had been slow with lots of caresses, like we were trying to memorize each other’s bodies.
After we kissed and cuddled for a while, I brought up the question that had been weighing on my mind. “So, what happens to us after tomorrow?”
“Tomorrow, we have one more fuck in the morning, then we go back to being your typical brother and sister.”
“Caitlynne...”
“Thomas, give it up. Long-distance relationships are hard, and an incestuous long-distance relationship has no chance.”
“You could fly up to see me...”
“I’m in the hole on vacation days, and I don’t have the money for plane tickets.”
“I could fly down to see you...”
“Yeah, then stay at my apartment with one bed rather than staying with Mom and Dad. That wouldn’t look suspicious,” she said sarcastically. “And don’t ask me to try to sneak into your bedroom at Mom and Dad’s. If they knew we were fucking, they would have a heart attack. And if any of their friends suspected we were fucking, they would shrivel up and die.”
“You could quit your job, move in with me while you look for a job in Boston, then we could live together to save rent.”
“I can’t quit my job right now. I have bills I have to pay every month, and I’m barely able to pay them as is. It would look bad on my resume to quit my first job after less than a year. I would love to move to Boston, but not now. Maybe in a year I could, but by then you’ll have a new girlfriend, and I’ll have a new boyfriend.” I sighed. I knew she was just being practical as always, but it hurt. “Thomas, I have had a great time with you. You turned a costly disaster into something wonderful. I feel super close to you now. I got over James in record time. You’re hopefully over Karen. It’s time for us to go back to our real lives and find someone new.”
I sighed again. “I’m not over Karen yet. I’m going to see her regularly at work. Every time, I’ll think about what would have been if I hadn’t gone on this stupid cruise. You were never that serious about James while I thought Karen was the one.”
Caitlynne looked up at me and stroked my face with her hand, soothing me. “I’m sorry, Thomas. It saddens me that you’re hurting, but trying to hold onto me isn’t the answer.”
Caitlynne went back to snuggling on me, and I held her close. She was right, and I knew she was right. I was sad - terribly sad - and tears started to flow.
Stop that!
Yes, I would be starting over tomorrow, but I would be starting over in a much better place than before Karen. I had many more friends and closer friendships. Caitlynne and I loved each other more deeply, and I knew that Caitlynne would do anything to help me. I had learned so much from Karen and Caitlynne.
When Karen dumped me, I hadn’t failed. I had succeeded beyond my wildest dreams. I had just not succeeded enough. The foreseeable future would suck, but I could already see some other opportunities, and I knew now much better how to succeed. I thought about the women who had expressed some interest in me. The sadness lifted, and I felt a tiny bit cheerful as I drifted off to sleep.
Thud! Thud! Thud! Someone was knocking on our door.
“Who is it?” I called out.
“Karen.”
“Go away, Karen.” What the hell was she doing, bothering us?
“Thomas, I need to talk with you. Please let me in.”
“We’re asleep, Karen. Talk to me in the morning.”
I closed my eyes to go back to sleep.
Bam! Bam! Bam! Karen was pounding now. “Thomas, I need to talk to you now. Please.”
“Tell her to drop dead,” Caitlynne whispered to me.
“I can’t be that rude to her,” I whispered back. “I have to work with her still. I’ll go talk to her. Put on your nightshirt.”
“Keep her by the door. The bed smells of sex.”
“Just a sec, Karen.” I got out of bed, pulled on my shorts, and a T-shirt. I went to the door and cracked it open. I didn’t take the chain off.
“Let me in, Thomas. Please. It’s important.” She looked like hell. Her eyes were swollen, probably from crying.
“Can’t you tell me whatever you have to say here?”
“No, Thomas. It’s not something I want to discuss in the hallway.”
I didn’t want Karen in the cabin, but I didn’t see what else I could do short of slamming the door in her face. I closed the door, undid the chain, and let her in. I tried to keep her next to the door, but when she started to slip by me, my only choices were to let her go or to body-check her against the wall. I closed and locked the door, and when I turned, she was sitting on the edge of the bed signaling me to join her. Exactly where I don’t want her to be. I walked towards her, and once I got close, she jumped up, grabbed my hands, and guided me to sit next to her.
“I’ve broken up with James. Getting back together with him was a terrible mistake. I had thought that I was meant to be with him, but it’s you that’s right for me. Thomas, will you please give me another chance?”
I was stunned. I didn’t know what to say. At the start of the cruise, I had been in love with Karen, and she had rejected me. I fell in love with Caitlynne, and she rejected me. Now Karen was back, saying that she was in love with me. I was suffering from emotional whiplash.
As I sat there dumbfounded, I saw Karen sniff the air. It took her a few seconds to process what the smell was. “Oh my God! You’ve had sex!”
Up to this point, Caitlynne had been lying along the edge of the bed away from us. After Karen spoke, she sat up. “Yes, we’ve had sex. After you and James crapped all over us and ruined our vacation, Thomas and I decided to try to have as much fun as we could. We went drinking and dancing, then one thing led to another.” She moved closer to Karen. “But that’s of no consequence to you. I can’t believe that after you hurt Thomas so badly, you would waltz in here on the last night and try to make up with him. What the fuck were you thinking?”
Karen’s eyes dropped. “I hoped he still cared for me,” she said softly.
“Why the hell should he ever trust you again?”
Karen continued to bow her head, then she suddenly pulled herself together, looked up at me, and squeezed my hands hard. I could see tears on her face. “Thomas, please give me a second chance. I’ll always be faithful to you. I made a dreadful mistake and hurt you badly. I’ll do anything to make it up to you. I was so stupid. I didn’t appreciate you, and I threw away a great thing. Please, don’t make the same mistake I made.”
Half-formed thoughts flitted in and out of my brain. Did I still care for Karen? I knew I wasn’t over her - I had just told Caitlynne that. Did I still want her? Could I ever trust her again?
“Karen,” said Caitlynne, “why the hell should he trust you again? Answer the question.”
“I’ve always been honest with Thomas.” Karen continued facing me while she talked with Caitlynne. She shook her head. “That’s not quite true. I’ve always been as honest with Thomas as I’ve been with myself. Thomas, I’ve loved you for months. I was a fool not to accept it.”
“You have a funny way of showing it,” said Caitlynne. “Do you always dump guys that you are in love with?”
“No. What I did was stupid. It’s complicated, and you aren’t going to understand, but I had asked God for a miracle to help me with all the guilt I was feeling, and when I saw James, I thought he was that miracle. But it was a mistake; an awful, terrible mistake that I am going to regret the rest of my life. Please, Thomas, let me have a second chance. Let me make it up to you.”
I couldn’t organize my thoughts, so Caitlynne spoke first. “What happens the next time some good-looking devout Christian walks into your life? Are you going to dump Thomas again?”
Karen shook her head. “Saint Paul wrote that love is patient, love is kind. It does not envy, it does not boast, it is not proud. It doesn’t dishonor others, it is not self-seeking, it isn’t easily angered, it keeps no record of wrongs. Love does not delight in evil but rejoices with the truth. It always protects, always trusts, always hopes, always perseveres. I had thought that I had to love a devout Christian to have that type of love. Now I know that you get that type of love by loving the person who is right for you. Thomas is right for me, and I had that type of love, but I stupidly threw it away.”
“Look, sister, you two had lots of problems before you decided to dump Thomas. With your escapades on this cruise, Thomas is better off walking away and finding someone without so many issues.”
“I know we had issues. Thomas, if you’ll take me back, I’ll do better. I promise.”
“Thomas wants you to live with him. Are you willing to do that?”
A pained look came over Karen’s face. “My parents...”
“If your parents are more important than Thomas, then get the fuck out of here and don’t come back.”
Karen started to say something, but Caitlynne interrupted her. “Do you love Thomas?”
“Yes. Yes, I do.”
“I don’t believe you,” said Caitlynne dismissively. “And you’re going to have to go through me to get to him. What were you going to do tonight to show him that you love him?”
Karen looked uncertain. “I ... I was going to beg Thomas to take me back. I was going to tell him why I went off with James, that it was stupid of me. I had loved Thomas but screwed everything up.”
“He doesn’t want to hear a fucking sob story!”
Karen buried her head in her hands and cried. I wanted to wrap my arms around her and comfort her.
“You need to show him that you love him.” Caitlynne’s tone was harsh. She sounded like she was speaking to a misbehaving child. “Not tell.” Pause. “Not imply.” Pause. “We’re talking actions”, pause, “and decisions.”
Karen was hunched over crying, offering no defense to Caitlynne’s onslaught.
“Karen, it’s time for you to take some big steps. Look at Thomas and tell him something that shows - not tells - shows him that you love him.”
Karen raised her head and looked me in the face. Her eyes were huge. Her cheeks were covered with tears. “Thomas, I love you. And I want to live with you.”
“When?” asked Caitlynne before I could respond.
Karen turned to Caitlynne somewhat stunned. She was unsteady like a boxer who had been pummeled too much. “When?”
“Yes, when!” hissed Caitlynne. I could hear the fury rising in her voice. “Tomorrow? Next week? A year from now? When do you want to start living with Thomas?”
Karen moved woozily. “Next weekend. I’ll move in next weekend.” She looked back at me as her voice gained strength. “I’ll turn in my keys early. Then we’ll look for a bit bigger place to live together.”
“Now we’re making progress,” said Caitlynne. The fury was still there, but not as strong. “If you love Thomas, then living apart is wasting money and reducing the time you spend together for no reason.”
Karen finally faced Caitlynne while continuing to hold my hands. She had an odd look on her face.
“You think I’m a bitch, don’t you?” asked Caitlynne.
“No. You’re assertive and you fight for what you think is right. I envy you. If I had done that, I wouldn’t be in the terrible situation I’m in now.” Karen turned back towards me. “But I’m fighting now. I’m going to fight for you, Thomas, with every ounce of strength I have.” A small smile came to Karen’s face. “Do you want me to live with you, Thomas?”
Before I could get out yes, Caitlynne said, “Whoa! Whoa! Whoa! When are you going to tell your parents?”
“My parents?”
“Yes,” said Caitlynne. “When are you going to tell your parents that you are going to move in with Thomas? Have you told them about Thomas?”
Karen’s head dropped. We waited.
“I haven’t told them anything about Thomas,” said Karen to the floor. She sounded in utter misery. She shook her head slightly, then raised her head and looked at me. “Tuesday. Thomas, will you be there Tuesday? I’ll tell them Tuesday. It’ll be easier to tell them if you’re with me.”
“I’ll be there,” I said tenderly.
“Do you want Karen to live with you, Thomas?” asked Caitlynne gently.
“Yes. I’ve never stopped loving you, Karen.”
“I’ve never stopped loving you, Thomas.”
“Great!” said Caitlynne. “Two more issues to resolve, then I’ll agree that you love Thomas.”
“Do they have to be resolved now?” Karen asked.
“Hell yeah!” said Caitlynne. “Thomas is a big softie, and if I don’t get them resolved now, they may never get resolved. Let’s talk about the small issue, then the big issue. Thomas is big on cuddling, but you refuse to do anything in public more than hold hands. That hurts him. Are you willing to do more than hold hands in public?”
“I love cuddling with Thomas. It’s just that...”
“Yes or no. It’s late. Cut out the bullshit.”
Karen turned towards me and squeezed my hands. “Is it important to you, Thomas?” Karen’s voice had more strength.
“It is.”
“Then I’ll do better. It’s something I’m not comfortable with, but I’ll work to overcome that.”
I felt good about that answer. I didn’t expect big changes overnight. What I wanted was the commitment to change.
“Okay, let’s move to the big issue,” said Caitlynne. “Karen, you need to up your game in the bedroom.” Karen’s head drooped. “There’s a reason why they call it making love. It’s a very special way of showing Thomas that you love him. It creates a unique bond between you two. Relationships are full of frustrations. Guys can forgive a lot of frustrations that build up during the day if they are made love to at night. Make your sex life another source of frustration, and the guy is going to walk away.” Caitlynne waited several moments for that message to sink in. “Let me guess - you were expecting to keep your panties on when you got in bed with Thomas tonight.” Karen looked at Caitlynne with wide eyes. She hadn’t expected Caitlynne to know such an intimate detail. “That’s not going to work. If you want Thomas to believe that you love him, you need to show him by making love to him tonight.”
“I’m ... I’m not in the mood...”
“Then decide to get in the mood!” said Caitlynne, the fury in her voice rising again. “Decide to control your moods! If everything has to be just right for you to make love, then you aren’t going to make love often enough to keep Thomas.” Karen sat unmoving. “If you don’t want to show him that you love him, the door’s over there.”
Karen said nothing for a moment, then asked, “What are you going to do?”
“I’m going to stay here. I’m not dressed to wander around the ship while you two get reacquainted. Besides, I think you could do with some tips.”
“I’m super uncomfortable about this.”
“Well, I’ll take off my clothes if that will make you feel more comfortable.” Caitlynne whipped off her nightshirt. “Take your clothes off,” Caitlynne told me. I slipped them off. We watched to see what Karen would do.
After a few moments, Karen came to a decision - she grabbed the bottom of the black cocktail dress she was wearing and pulled it over her head. She unfastened her bra and took it off. She kicked off her shoes, then slipped off her panties. Naked, she laid down on the bed. “Thomas, I do love you and I’ll do my best for you, but it’s not going to be very good.”
“C’mon, girl!” said Caitlynne. “Positive attitude! You love Thomas. Thomas loves you. You’ve been apart for a few days. Let Mother Nature work her magic.”
“I’m not comfortable.”
“Then you and Thomas need to work on getting you comfortable. Thomas, what kind of foreplay does she like?”
“She likes it when I rub my hands over her body.”
“Okay, do that.”
I was lying next to Karen while Caitlynne was sitting on the other side. I gently slid my hand up and down Karen’s leg. Her muscles were tense.
“I have an idea,” said Caitlynne. She grabbed her silk nightshirt. “Put this around your hand, Thomas.”
I took the nightshirt, wrapped it around my hand, and started lightly stroking Karen’s body with it. “Is that better?”
“Yes. That feels nice.”
“Good,” said Caitlynne. “Now, you need to think about something that will put you in the mood. Hmmm ... You enjoy showering with Thomas, right?”
“Yes,” said Karen a little sheepishly.
“And during those showers, he’d touch you like this, right?”
“Yes,” said Karen with a little smile.
“Okay. Close your eyes. Imagine you are in the shower. Warm water is flowing over you. Thomas is rubbing his hands over your body. He loves your body. You have such a great body.”
Caitlynne kept talking in a soft, soothing voice about the warm water in the shower as I ran my hand over Karen’s body. I could feel the tension slowly flow out of Karen’s body. When I ran the silk over her tits, her nipples perked up. Her breathing became slower and deeper. As she relaxed, she spread her legs apart, allowing me to run my hand over the inside of her thighs.
“You seem to be getting in the mood,” said Caitlynne in her soft, soothing voice. “It’s best if Thomas makes you cum before you start making love. You’ll be better lubricated that way, and if he cums before you do, you’ll still be satisfied. Do you prefer Thomas to make you cum with his hand or his mouth?”
“I like his mouth better, but I don’t like how he smells afterward.”
“I’ll get a small towel for him to wipe his face on when he’s done eating you. I’ll also get a big towel for you to lie on so you won’t get the bed messy.”
I took that as my cue to eat Karen. I got on the floor and pulled Karen to the edge of the bed. She was so light in my hands. I spread her legs and moved to her pussy. I pushed her pussy lips apart with my tongue and licked up and down. She was wet, not as much as usual but more than I had expected.
Caitlynne came back from the bathroom with the two towels. I lifted Karen’s bottom up, and Caitlynne slid the big towel underneath her. She set the small towel on the edge of the bed for me to use later. Then she got back up on the bed and lay down next to Karen.
“Do you have any personal lubricant?” Caitlynne asked Karen.
Karen shook her head, no.
“I’ll give you mine tomorrow. Use it when you don’t have a lot of time or when you want a quickie. Also, use it when you aren’t in the mood to get yourself off but still want to make Thomas happy.”
“Thanks, Caitlynne. Thanks for everything.”
I was licking up and down Karen’s sweet pussy. I used the very tip of my tongue to wiggle up and down in a very slow circle around Karen’s clit. I could hear her breathing getting ragged.
“Do you like what he’s doing?” Caitlynne asked Karen.
“Oh yes. It’s wonderful.”
“Give him feedback regularly. He can’t know what you think is great and what you think is merely okay if you don’t tell him.”
“Thomas, I love what you are doing now. It feels so good the way you are teasing me.”
I was glad to hear she liked it. I did it a little more, then moved to something else as I knew it was best not to overdo it.
Karen’s pantings got deeper and deeper. When she was close to cumming, her pants became three quick Ha’s in succession. She was panting that way now. I went back to wiggling my tongue in circles around her clit. She bounced her bottom up and down on the bed, making it hard to finish her. She thrashed her head back and forth on the bed with the bed sheets clinched in her hands. She arched her back and rocked her body back and forth as she quietly came.
I pulled back, sat on my haunches, grabbed the small towel, and wiped my face. As I climbed back up on the bed, Karen was hitching further up the bed to give me room. I slid the towel to keep it under her. When her head was close to the other edge of the bed, she opened her legs for me. I moved between them, grabbed my cock, and moved it towards her pussy.