Note: This story was dynamically reformatted for online reading convenience. Cruise Ship Mates Switch... For Fun and Healing! Last November, to celebrate our twenty-fifth anniversary, my wife, Leah, and I took a seven-day Caribbean cruise. To increase the erotic aura of the tropics still further, we challenged each other not to have sex for a week beforehand. By the time we got to our stateroom, after having watched the dock recede into the distance, we were both in a frenzy of lust. Leah slipped into the bathroom to change into the special negligee she'd bought for the trip, but.... I had scarcely said how pretty it was when it was cast aside and we were locked together on the bed, oblivious to anything but our mutual pleasure. Her soft mouth engulfed me and made my already-stiff cock swell to unbelievable proportions. Lest I come too soon, I rolled her off me and began to lick her to an explosive orgasm. That was not enough for my Leah, however and she mounted my feverish cock, rocking back and forth on me, playing with her cunt and plunging down hard. Her whole body was quaking by the time we both dissolved into one immense tidal wave of ecstasy. That afternoon, somewhat more relaxed, we toured the ship and checked out the exercise facilities. I noticed one good-looking woman in particular clad in lavender spandex and looking as fit as anyone half our age. Beside her on a treadmill was an older man, apparently her husband. He was handsome, but seemed to tire easily. We speculated that he might be recovering from a heart attack. Leah teased me about how I found the woman so attractive. Then she led me off for another round of lovemaking before dinner. And who should our dinner companions be but the couple from the gym. His name was Herbert and hers was Marjory. Herb was a retired executive, and sure enough we were right, he was getting his strength back after a bad heart attack. They seemed to be very much in love and, however debilitated he might be, they both radiated a thoroughly sensual aura. Apparently they picked up similar signals from the two of us, because as we took our meals together for the next couple of days and met at the pool and in the gym, the conversation seemed to take a more and more risque' turn. Marjory at least was coming on to us both, while Herb was giving obvious, if tacit, consent. The next day Marjory joined us at the pool alone. She was breathtaking in a tiny string bikini that had my mouth watering and my cock behaving embarrassingly. Absently stroking my cock, I watched her dive into the pool and swim with my wife. My eyes eventually closed in the sun, but I was soon startled back to consciousness by a voice offering to help me with my "problem." It was Marjory, accompanied by a grinning Leah. "Your wife's been telling me about your fantasy of a three-way," she said. "Would you mind a spectator as well? Herb has to take it easy, but he would certainly get a kick out of watching us together with your lovely wife." I jerked upright so hard I almost collapsed the deck chair. This was my dream come to life all right, and if Herb wanted to watch, fine. I liked the guy, and I wanted to do anything that would make him feel half as good as I suspected I was going to. We made a date to meet at their cabin in an hour. Leah and I went back to our quarters, a little nervous, but full of delighted expectation. When we arrived at their luxurious stateroom, Marjory melted into my arms and drew me toward the bed. Our tongues met and interwove. My hands drew her ass close and she started to grind up against me. Out of the corner of my eye I saw Leah sitting by Herb on the couch and giving him a sweet, gentle kiss. They whispered for a moment and she got up. Next thing I knew she was helping Marjory and me divest ourselves of our clothing, stroking both our bodies and showing us off as if we were contestants for some erotic prize. I bent to take Marjory's nipple in my mouth, and she moaned. I kissed my way down her belly and around her perfectly shaved pussy. Licking her mound and exploring her bare lips, I teased them apart and dove for her nectar. I licked at her clit, driving in deeper whenever I could get the right angle. When she came, we toppled over on the bed, and she mounted my erect cock, taking me inside her in one downward thrust. We ground together with instinctive rhythm, and her pussy gripped my cock as if she had needed this for a long time. Leah was everywhere, kissing and sucking on Marjory's breasts, playing with my balls, egging us on until simultaneous orgasms filled us with a tremendous explosion of joy. I lay back, enjoying the afterglow, but the two women were kissing deeply and caressing each other as if they could go on for a long time. I glanced over at Herb, who saluted me with his seltzer glass, his stubby but thick cock lying semi-hard in his other hand. He wasn't so much stroking it as letting it grow on its own. The sight of Marjory sucking my wife with several fingers deep in her wet pussy, and Leah biting at Marjory's big brown nipples, was making me hard again. I slipped my cock into Leah's mouth and was rewarded with frantic sucking as Marjory brought my wife over the edge. Then Leah rolled away as Marjory took my cock and started sucking it hungrily. Leah crawled over to the couch and gently took Herb's cock in her hands, kissing its mushrooming tip and licking it softly. He responded by getting harder and bigger than I had expected. My cock was at full stand, thanks to Marjory's eager mouth, and Leah called to her to come and see her husband's pleasure. Marjory let my cock fall from her lips, whispering that this was the first time in two months that Herb had been able to keep an erection, and I understood her eagerness to take him in her mouth. Meanwhile, Leah beckoned me to join them on the rug, and I mounted her doggy-style, staging a spectacular fuck for Herb's enjoyment (and ours) as his beautiful wife sucked him to his first orgasm in weeks. We were so delighted at his pleasure, and so turned-on by his watching, that we came together, his come flooding Marjory's mouth within seconds of my load spurting deep into my wife's pussy. We expected Herb to look tired the next day but when we saw our friends at brunch, he looked happier and more relaxed than ever. Marjory confided to me that they both felt far more optimistic about his full recovery and they had never had such a wonderful time. They hoped we would continue the liaison for the duration of the cruise. The nights and days passed in a blissful sequence of sun and sex, with Herb becoming more and more active and daring. The last night of the cruise, he fucked Leah to a monumental climax as Marjory rode me to a series of jolting orgasms that released my load into her hungry pussy. We parted company with promises to write, and we have stayed friends ever since, visiting each other occasionally and sharing our homes and our bodies with great affection. My lust for Marjory has not abated, and Leah takes great delight in making love to both our friends, especially the fully recovered Herb, who has been known to take on both our wives at once! There you have it... a true testimonial to the magical healing propertiesof tropical sun and fun.