“You guys need anything?” my wife Maddie asked as she reached for the Caribbean condo door, on her way to go shopping. She looked sexy as hell, only wearing a tiny bikini with a short, colorful wrap around her waist to cover her nearly naked perfect ass. The strings of her top strained to hold her ample tanned breasts, leaving little to the imagination. She loved nothing more than dressing in ways that drove me wild, especially on vacation. Her sex drive was insatiable, and she knew exactly how to keep me ready for her every desire. We also both knew that going out dressed like that would feed her exhibitionist kink. Her bikini thong under her wrap was already drenched, anticipating all of the men and women ogling her as she pretended to innocently go about her business.

“Nothing the store has,” her identical twin sister Addie answered playfully with a wink of her large aqua-blue eyes.

“I’m good,” I said from the lanai overlooking the ocean, drinking a beer, surrounded by a warm sea breeze and palm trees. What more would a guy need?

Maddie waved as she disappeared through the door for her quick shopping spree into town.

I first met Madison in college. I had never met anyone like her. We fucked like rabbits through school and got married the year after. It’s now eight years and two kids later. Despite all we’ve done, Maddie’s sex drive hasn’t slowed down. It was her spontaneous idea to leave the kids with her parents and get away for a romantic beach trip. That meant one thing. The surprise was she invited her sister, Addie, to stay in the condo’s second bedroom.

Madison and Addison have always been very close. I was astonished by how identical they were when I first met Addie, although I could easily tell them apart, especially when they were together. The only obvious difference between them was the length of their dark brown hair. Maddie’s hair was long, Addie’s was shorter, cut just above her shoulders. Addie dated a lot of guys in college before marrying Jared, a guy she met at the gym. Despite all their attempts, they didn’t have any kids yet. For now, they loved being aunt and uncle to ours.

Addie and Maddie have always been best friends and love spending time together. It was something I quickly got used to. There are no secrets between them. Jared traveled a lot with work, which meant Addie was like a comfortable third wheel, always hanging out with us.  With him working out of town the week of our Caribbean trip, it wasn’t surprising that Addie came along.

“Can I get you another beer?” Addie asked.

“Sounds good,” I answered without looking back.

Addie stepped out onto the lanai and casually leaned over to hand me the cold beer. She wore a white, loose, muscle tank top, low cut in the front and open on the sides with only a white, string-bikini bottom. Her tanned skin immediately glistened from the hot, humid climate. She smiled knowingly with her tits completely exposed, showing her fully erect thick nipples beneath. Her wide, aqua-blue eyes locked onto mine. She stood back up slowly, sauntered to a chair across from me, fully aware the movement of her ass would have my rapt attention before she sat down. She teasingly looked back up at me as she raised the opening of the long-necked beer to her lips and took a sip.

I had not seen her act this way around me before. She knew I would find her physically attractive. How could I not? I was married to her identical sister. I suddenly felt uncomfortable. “What are you doing?” I asked.

“Just enjoying the view,” she answered, taking a long, purposeful glance down my body, pausing at the only thing I had on, my loose basketball shorts. From the position I was sitting, she could see most of the way up the leg of the shorts. She smiled again at the sight of the undeniable, involuntary movement beneath the thin nylon fabric. “I see you are too,” she added.

I blushed. “Yeah, I, uh, but,” I stammered.

Addie smiled with some pride, seeing her seduction was working more quickly than she anticipated. “At a loss for words?” she teased. “That’s not like you.” She raised the opening of the beer bottle to her lips again, this time licking the circular edge with her tongue while her fingers held the neck of the bottle loosely.

I took another swig of my beer. The tropical sun beat down on the two of us. Her tank stuck to her tan, moist body, accentuating her naked tits beneath. “We can’t,” I blurted.

Addie stood up and moved toward me. “Why not, handsome? Maddie’s told me all about how good you are.”

“No, no,” I squirmed as she knelt down in front of me. Her right hand used my bare thigh to steady herself before it slowly moved up toward the opening of my shorts.

“I can’t, Addie. I’ve never cheated on Maddie.”

“You think she’s never cheated on you?’ she asked.

“What do you mean?  Do you know something I don’t?” I asked, suddenly confused.

Addie smiled. “I’m not saying I know anything,” she answered coyly, effectively planting the seed of doubt. “We don’t have to cheat on my sister. We can play though, can’t we?” Her long fingers moved purposely beneath the edge of my shorts. She seductively circled her tongue around her lips.

“That’s cheating,” I said, without moving.

 “Kissing and fucking me would be cheating,” she said softly. “I don't want to kiss. Fucking would be too risky anyway because I’m ovulating right now. We can play in other ways, can’t we?” Addie’s right hand found its target, wrapping her fingers around my already-hardened cock beneath my shorts.

“Oh, god,” I said.

“Damn,” Addie complimented. “You’re even bigger than what Maddie told me.”

“Addie, Addie, we can’t,” I said, unconvincingly.

 “Just a little fun?” she pleaded with a pout, pushing her bottom lip out. “We’re here on vacation. You and Maddie are fucking every night. It’s been so long for me with Jared working and all his travel. It won’t hurt anything to play a little, will it?” she asked, looking up at me with her wide aqua eyes. “Our little secret.” Her hand gripped my cock tightly and began stroking purposefully.

“Oh, fuck,” I said.

“Damn, you feel good,” she said. Seizing the moment, she quickly pulled my shorts down my legs and moved in between my knees. She mercilessly twirled her tongue around my bulbous tip. “Mmmmm,” she moaned.

“Oh, fuck,” I repeated.

Addie moved down to the base of my shaft and slowly licked her way up, savoring every inch, traversing the engorged veins, before descending again. Her eyes studied the specimen as if deciding how to make the most of this prize she’d heard so much about. She sucked the head of my cock between her thick lips, taking it captive for her tongue to have its way.

My back arched at her skill.

She suddenly swallowed the entire length of my swollen cock, until the tip of my head hit the back of her throat. She gagged, causing her mouth to fill with thick, viscous saliva.

“Oh, yes!” I said.

She pulled my cock from her lips with a pop. “I’m better than my sister, aren’t I?” she teased before swallowing it again.

I knew better than to answer. My hand moved through the opening in the side of her tank and firmly took hold of her large, familiar tit. I captured her nipple between my strong fingers and thumb, twisting lightly.

Addie whimpered at the sting and arousal of pain. Her lips tightened around my cock in response.

Maddie loved nipple orgasms. There was every reason to think Addie would too. I rubbed and twisted her nipple like I knew would render her helpless. My other hand moved to the front of her bikini bottoms, lightly fingering her soft folds through the fabric.

Addie moaned.

“Someone’s already soaked,” I said. “What a needy little slut,” I said.

Addie gasped, aroused by the dirty talk. “I’m so needy,” she confessed. Addie had started this but now realized I was taking control to finish it.

I grabbed her hand and stood up. “Inside, you little slut.”

“Yes, Sir,” she replied obediently with a cunning smile.

I pulled her top off and laid her in the center of the wide couch. I knelt between her long, tanned legs and pressed my cock against her clit, over the thin fabric of her bikini. With one hand I stroked her pussy with my cock while the other caressed her tits and nipples.

Addie squirmed. “Oh, yes. Harder, please,” she begged.

I pressed firmly, stroking her clit faster.

“Oh fuck, that’s so good,” she moaned. She reached down and pulled the string on the side of her bikini bottom, pulling it off. “Oh god, please let me feel you.”

“I can’t fuck you,” I said.

“Just across the top of my pussy then. Fuck my lips. Please don’t stop! I’m getting close.”

I laid my thick, veinous cock between her wet folds, pressing her labia around my cock, and thrust forward. My cock slid forward toward her clit before running my length over it.”

“Oh fuck, yes!” she screamed, unconcerned if anyone in nearby condos could hear.

Her two hands reached down between her legs, pressing the swollen drenched folds of her pussy against my cock as I continued to fuck her length.

I took hold of her ample tits with both hands, using them to roughly pull myself back and forth against her needy pussy. My fingers and thumbs each captured her nipples, twisting them to intensify her arousal. We built a rhythm, fucking like that in a way that brought us both close to climax.

Addie suddenly sat up and pushed me onto my back on the couch. She straddled me and took my cock in both of her hands, returning it to between the folds of her pussy. “I’m going to cum,” she gasped as she rose up and down on her knees over me, my cock pressed against her pussy.

Her body started to shake and she let out a scream. She used my cock to circle and then rub hard against her clit until her whole body quaked. Addie squirted her cum all over me, soaking my abs and chest. She pressed my cock harder against her, moving it faster to keep her climax going as long as she could.

Rubbing my frenulum against her clit and folds quickly brought me toward the point of no return. “Oh, fuck, you’re going to take me, Addie” I announced. “I’m going to fucking cum! Don’t stop!”

Addie kept it going, speeding her strokes while reading my body to make it as epic as possible.

“Oh, fuck! Oh, fuck! Oh, fuck!” I screamed. My body quaked.

Addie had heard me climax every night through the thin condo walls while her insatiable sister, Maddie repeatedly fucked me. It was now her turn. She was determined to make it good.

“I want your cum,” she said hungrily. “I need your cum.”

Addie continued to rise up and down on her knees, pressing my cock against her drenched folds.

“Oh fuck! I’m cumming!”

Feeling it swell in her petite hands, Addie suddenly pushed the head of my cock inside her pussy and dropped her ass onto my body, thrusting my entire length inside of her. Thick cum launched into her womb with the force of a rocket, filling her.

I instinctively thrust my hips up in protest, which only further buried my cock into her.

Addie leaned forward, taking hold of my shoulders with her hands while she forcefully twerked her ass on me, not stopping until she siphoned me dry. “I want it all,” she said. “I need it all.”

I was helpless on my back as she continued to fuck me hard, filling her with my massive load of potent seed.

“I’m going to cum again,” she said, running her long fingers quickly over her clit, before spraying me again. “Fuck you’re good!” When her climax finally subsided, she collapsed over my body, laying her head on my shoulder. “So, fucking good!,” she said, out of breath. “It’s been a long time since I’ve been fucked like that and cum twice in a row. Maddie was so right.”

 “I can’t believe that just happened,” I said in disbelief. Addie’s pussy was filled with a massive load of my thick cum, now seeping onto my leg. I was drenched in hers. Our sweaty bodies lay on top of each other, exhausted.

“Amazing, right?” Addie asked with a warm smile.

“I’ve never cheated on Maddie,” I said, guilt-ridden.

“It’s okay, baby. It’s not cheating if it was my idea,” a voice like Addie’s said from behind us. “Our kids are finally going to have cousins.”

I quickly turned to see Maddie closing the door with a proud smile, taking her bikini top off. I looked up at Addie, who gave me a wink with her Machiavellian smile.

“Wait,” I exclaimed. “You planned this?”

“Even though it was my idea, you’re still going to make it up to me,” Maddie said.