My husband, Ryan, and I went on vacation this summer with another couple, Gina and Ken.

We’ve been friends with them for several years and had taken weekend trips with them in the past. This summer, we decided to rent a boat and sail the coast for a week.

On the second day, Gina and I were sunning ourselves in our bikinis, and Ken was fishing from a seat in the back. After a while, I went up to the bridge to watch Ryan as he steered the boat. He didn’t hear me as I climbed the ladder to meet him, so I walked up behind him and grabbed his butt, surprising him.

“Watch it there!” he said. “They’ll see,” he added. He’s always been private and hates public displays of affection, especially in front of our friends.

“Too late,” Gina said from behind me. “I’ve already seen.” She climbed the rest of the way up to the bridge and walked over to grab Ryan’s butt, too, then laughed. “We’re all friends here, aren’t we?” she giggled.

Before Ryan could react, Gina quickly untied her bikini top and flashed my husband her nice, firm breasts, and then quickly retied her top. It was over in a second, and she acted like nothing had happened, simply going back down the ladder and joining Ken at the back of the boat. From the way my husband’s dick had jerked in his shorts when he saw her tits, I knew I hadn’t imagined the scene. We motored along a little while longer, then anchored in a small cove. I went down to the cabin to get a book to read, but when I walked inside, there was Ken, laying on his back, with Gina kneeling between his legs. They were both naked, and Gina was sucking her husband’s hard cock. Gina’s round butt was pointed toward me, and I instantly noticed just how truly gorgeous her ass was. I was immediately turned on.

I didn’t know what to do — about my arousal or the scene I’d just walked in on — so I made to move, ready to head back up onto the deck. But Ken saw me, and told me to stay — and watch. So I did just that.

Soon I found myself fondling my tits and rubbing myself through my bikini, unable to tear my eyes away from the couple on the bed in front of me. At one point, Gina reached back and rubbed her pussy, then held her lips wide open, knowing I could clearly see her. She had shapely legs and a nice, plump butt, but my eyes moved over them quickly to focus on her gash. The red hair between her legs was darker than the hair on her head, but there very much of it, leaving her plump twat naked and neat.

As I watched, she climbed on top of Ken and lowered her pussy onto his cock. I couldn’t help myself anymore and slid a hand into my bikini bottoms so I could play with my own pussy. Ken was watching me while I stared at them, and as his cock slid in and out of his wife’s cunt, it made erotic squelching noises.

I came just before they did, and I pulled up my bottoms and left while they were still fucking.

Ryan paid no real attention to me when I joined him on the deck; the fish were biting and that was all he cared about. But after sitting with him for a moment, I realized I was still horny and needed to do something about it. I stood up and walked over to my husband, reached around him from behind and grabbed his cock.

“Hey, the hell are you doing?” he asked as I began stroking his cock to hardness. “Somebody will see.”

“Oh, they will not,” I assured him. “Besides, who cares? I doubt anyone will mind.”

As I spoke, I moved around in front of him and got on my knees before taking his cock in my mouth. I sucked him hungrily, and he didn’t take very long to come. I swallowed ever drop of come, and then got up and wiped my mouth before going over to my chair again get some sun. I was satisfied, at least for the moment.

Later that day, maybe around dusk, we went swimming. We were all playing around, splashing and such, when a pair of hands came around me from behind and grabbed my boobs through my bikini top. At the same time, I felt a hard cock grinding into my butt. A hand slid down to feel my ass, then moved between my legs to caress my pussy through my bathing suit. Since I was on the other side of the boat from everyone else, I had no idea who’d swum up behind me, but I had a suspicion of who it was — and it wasn’t my husband.

Ken’s fingers worked my cunt inside my bikini bottoms for a few moments before he pushed the crotch aside and entered me from behind. I gasped as he stuffed his thick prick into me and began thrusting. It felt so wicked, being fucked by this man while my husband was just on the other side of the boat, but I didn’t care. It felt good!

Ken came fairly soon, and the feeling of him shooting inside me made me come, too. Once we calmed down, I slid my suit back into place and he pulled his trunks back on before we swam around to join our spouses and get back on the boat.

No one said anything, and we acted like we always do, but things felt different to me. I wondered if my husband suspected anything, but I had a feeling he was completely clueless. Gina, on the other hand, kept giving me knowing smiles for the rest of the night, and it was clear she was okay with me having sex with her husband.

The next day was more of the same, with lots of fishing, sunning and swimming. In the afternoon, Ken was taking his turn driving the boat while Ryan fished, and Gina and I went up top to check on Ken. As we all chatted and admired the view of the coast, I noticed Gina rubbing her husband’s crotch. After a minute, she pulled his cock out of his shorts and began jerking him off right there in front of me. She invited me to help out, and I glanced around to see where my husband was.

“Don’t worry about Ryan,” Ken said as he grabbed my hand and pulled it to his crotch. “This won’t take long.”

I acted fast, and without thinking, I got on my knees and brushed my lips along his cockhead. I did this several times before opening my mouth and sliding his cock between my lips. I was aware that Gina was still pumping his cock while I sucked him, and it turned me on knowing that we were working together to get her husband off. But I was still nervous about Ryan catching us — catching me — so I sucked fast and swirled my tongue around Ken’s dick, trying to make him come as fast as I could. It worked, and soon he groaned and came, shooting down my throat.

When I sat up, Ken and Gina asked if I was okay and if I’d enjoyed it. Looking back to make sure my husband was fishing, I confirmed that he was clueless as ever, then told the other couple, “Yes, I did.” We all laughed.

The rest of the week was spent lounging around and sneaking in a little fun with Ken and Gina when we could. All in all, it was a fun and relaxing trip that awoke an adventurous side of me that needed to get out.