Sue and I went to the pool and got a couple of rum concoctions from the swim-up bar before we headed for the beach. We walked through the shallow water to a corner of the pool and set our drinks on the pool's tiled edge. I swam up close to Sue and whispered to her, "See that couple over on the chaise lounges?"
She looked over and saw the good looking couple, about our age. She was reading and he was scoping out the female talent around the pool.
"How'd you like to swap with them tonight?" I asked. Sue had been acting so sexy and was so turned on by the movie the night before that I wanted to keep her worked up.
"Hmmm," she replied. "He's pretty good looking. I'll bet his dick is, too. Think he'd like me to fuck me?"
"I know he'd like to," I said. "He was checking you out the entire time we walked across the deck to the pool. Probably just fantasizing about licking up your legs to your pussy."
"Mmmmmmm," she said again. "What about her. What would you like to do to her?"
I knew the right thing to say, and I answered her question with another. "What would you be comfortable seeing me do to her?"
"I could watch you eat her pussy, and fuck her." Just at that moment the woman shifted in her chaise lounge, opening her legs just a bit, allowing us to see the gusset of her bikini, the thin shield between her pussy and the warm air. It had to have been coincidence.
"It's making me wet just thinking about it."
"Really?" I asked. How can you tell you're wet when you're already wet from the pool?
"Believe me, when I get that feeling down there, I get wet down there." I reached down and slipped my finger inside the leg of her swimsuit and it instantly slipped into her warm, wet cunt. I gave her a couple of wiggles as I marveled at the change from the cool wet water to the warm, wet inside of her pussy.
"Ooh," she cooed, and grabbed her drink and looked around. I pressed against her G-spot. "Hey, that guy's checking us out again", she said. "Maybe he's thinking about how much he'd like to swap with us."
"Well," I said, knowing this was my chance. "What would you say to seeing if we can strike up a friendship with another couple while we're down here this week. See if we can find another couple to swap with us? I mean, we're down here, and when we go home what happens here can stay here." She pushed against my finger.
"Wow," she said. "I think I might be up for that. But we'd have to set the boundaries and have a safe word."
"A safe word?" I asked. "What's that?" I pulled my finger out of her, back into the cold water.
"You know, a word that means one of us is getting freaked out and wants to stop it. Like if the safe word is banana, and you hear me say, "Oh my god, your dick looks like a banana!', then you know that I want to end it. And that it's final. Once someone uses the secret safe word, no matter what, we get out of there."
I wondered how she knew so much about things like safe words. "Yeah," I said. "A safe word. And: we always have to do it together. No getting any on the side. Only together."
She agreed that anything else would be cheating.
By this time my boner had gone down and we grabbed our drinks, jumped out of the pool, and headed for the beach. As we covered the 50 or so yards, Sue began looking around.
"Oooh," she said. "There are LOTS of good looking couples. Do you think some of them are thinking the same thing we are?"
"Well," I replied. We're not in Vegas, but I think the same reasoning applies. What happens in the Caribbean stays in the Caribbean." Sue just smiled at me.
"Will you be ok with it afterwards?" she asked.
"I'm pretty sure. You?"
"Yeah, I think so. I'm not wild about you fucking some other woman, but the whole idea of the sexiness of both of us screwing other people together really turns me on. I know I love you, and that will never change. And I'm confident that you love me, and that will never change. I think we could try it. If we're ok with it, great. If not, we leave it here."
And at that, the pact was formed. From that moment on, we had our radar out, and together we searched for that "perfect" couple to share the rest of our vacation with.
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After a refreshing swim in the warm tropical water we headed back to our room to change for our afternoon outing off the resort. We were going on a cocktail cruise on a huge catamaran out to some wreckage of old ships on a reef, then to a shopping area where the Cruise Ships pulled in.
When we got to our room, I jumped in the shower and Sue followed close behind me. We began soaping each other up, and Sue paid extra attention to my cock and balls. Long after they were clean, she was still washing them, telling me how much fun we were going to have when we were having sex with another couple. "You could be watching me suck another guy's cock while you're getting your cock sucked by his wife."
This was getting me hotter and hotter. I couldn't believe my normally staid wife was saying the things she was saying. I thought to myself that we obviously needed to take more tropical vacations.