The next morning

As the dawn sun came lancing through the windows of the beach house, Kent Walker rose from bed and went for a shower. The same shower where his wife had sucked his cock the night before!

As he closed the bathroom door behind him, Helen stirred in the bed. Kent had been surprised by his wife’s behaviour, and so had she. It almost felt like an extension of her fevered dreams as she’d seen her husband enter their room and go into the bathroom. She’d felt compelled to rise from the bed and open the bathroom door, and had gasped and bitten her lip when she’d seen him standing in the shower stall, his cock standing erect, his eyes screwed tightly shut with a look of passion as he slowly fisted his shaft.

She’d crept in and silently opened the door to the shower stall. Just as it seemed he was about to pop, she’d knelt before him and taken the head of his hot, hard cock in her mouth. As he opened his eyes in surprise, she looked up at him with a look of smoldering lust and his cock had erupted, sending his hot, thick seed pumping down her throat.

Helen had never shown any enthusiasm for oral sex with him before, but last night she had swallowing his pumping seed with great relish. An act that she had previously thought of as degrading and disgusting now seemed quite thrilling and natural to her. He was her husband, after all! And his cum hadn’t tasted at all bad.

Kent’s mind was awhirl with how events had unfolded over the last few days. His experiences at the Varko house almost seemed like a dream too, and he almost wished they had been. But no, it had all been real. He had cheated on his wife for the first time with his best friend’s wife, and he already knew that he would have to cheat on her again. The thrill of the forbidden was just too intoxicating! He had also made a major career decision that he hoped would be to his and his family's benefit, and knew he'd have to tell Helen about that pretty soon.

After his shower, he went to his laptop and logged into his online bank account. Sure enough, a large sum had been deposited in his account the night before. So, that made it official. He worked for the Varkos now, and they would expect him to do his duty, whatever that might be. A sense of foreboding mixed with excitement came over him when he pondered this.

***

The two couples and Stacy sat together around the kitchen table while they ate breakfast. Helen was aware of a certain weird energy that now existed within the group that hadn’t been there before. She was sure she could see Stacy exchanging certain looks with Richard and Amanda, and Kent seemed to be in an odd mood too. She felt a little strange herself, but that was probably due to the brief fever she’d only just recovered from. Or perhaps she was just being paranoid. Anyway, she hoped a nice relaxing day would make her feel more like herself.

Richard’s phone chirped and he picked it up. As he read the text, he grinned happily. “Oh wow, that’s Arman Varko asking us if we’d all like to join him and his wife for a trip on their yacht today! They say they can take us round the island this morning then hop over to the mainland for lunch, then maybe do a little shopping in the afternoon in a town there. How does that sound?”

Helen felt a certain trepidation at the idea of meeting the mysterious couple again so soon, but also a certain excitement. She seemed to be the only one to have any doubts and everyone else was clearly excited at the idea.

“OK then, I’ll tell him we’re in!”

Amanda smiled happily and touched Helen’s arm. “A day of sailing, sightseeing, sunbathing and shopping! Heaven!”

After a brief exchange of texts, Richard set his phone down. “They’ll send Zoltan to pick us up in an hour. Better get ready!”

Finishing her cup of coffee, Amanda stood up. “Helen, why don’t you come with me and we can decide what to wear. Come on, girl!”

Helen quickly finished her own coffee as Amanda took her by the arm and led her down the hall to her room.

***

Amanda posed in front of the mirror, admiring how her ass looked in the red thong bikini. She looked over at Helen, who was sitting on the bed, wearing a much more conservative style of bikini with a floral design. “Oh Helen, it’s not the 50s any more, you know. Don’t you think you should wear something a bit more flattering? We’re going on a yacht cruise, not to church!”

Helen looked over and raised her eyebrows as she looked at Amanda’s tanned ass-cheeks which were fully exposed by the Y shape of the thong. “Flattering! Well, that’s one way to put it. Really, Amanda, I don’t think they’re very me.”

Amanda smiled over at the brunette and winked. “Helen honey, you might be surprised at what’s you.” She picked out one of her various swimsuit options which were scattered over the bed and selected a white bikini. Holding the bottoms up, it was clear they too were in the thong style. “Go on, wear this today. I think you’ll like the way the thong looks on you.”

Helen felt a sudden unexpected thrill at the idea of wearing the scandalously brief thong bikini, and letting everyone see the uninterrupted curves of her bare ass. With a certain pride, she knew it would look just as good as Amanda’s, if not better.

Amanda than held up a semi-transparent sarong. “You can wear this around your waist if you want.”

Helen liked that idea. It would give her a bit more modesty if she didn’t quite have the guts to have her ass on full display for all to see.

With an uncharacteristically mischievous smile, she looked up at Amanda. “You know, I just might take you up on that.” So saying, she got up and stripped off her boring old bikini, not thinking a second’s thought about being naked in front of the wife of her husband’s friend. In fact, she enjoyed the admiring glance that the blonde gave to her magnificent figure as she stepped over to her and held her hand out for the skimpy white bikini.

Slipping the white thong up her supple thighs, then resting it snugly between her broad, toned buttocks, Helen certainly had to accept that it felt good. And as she looked over at the mirror, she could see that it looked good too. The curved shape of the bikini bottoms set off her own luscious curves to great effect. She was showing a bit of a tan line, but hopefully a bit of exposure to the sun would fix that. She also noted that a few of her dark pubic hairs were visible to either side of the white strip which hugged her crotch snugly.

Amanda smiled. “All you need is a little trim down below, and you’ll be ready to rock!”