The Summer Rental - Part 8

Click here to read the previous parts of the story.

"They fucked out there on our first day here," Marie said as she looked out onto the deck.

After a lengthy, relaxed breakfast, Ruby and Adam had each taken a fresh cup of coffee to the deck and were seated next to each other and indulging in what looked to be an intimate conversation as Christian and Marie cleaned up.

"Though I'm sure you know that," Marie added with a smile.

"I do," Christian replied. Ruby had wasted no time in informing him of her tryst with her brother-in-law, and it seemed that Adam had done the same with Marie. "Did you enjoy hearing about it as much as I did?"

Marie smiled at him for a moment - as if she was briefly reliving the memory of hearing how Ruby and Adam had fucked on the deck while their spouses were at the grocery store - and said, "I did. I enjoyed the pleasure of tasting your wife's pussy on my husband's cock as Adam told me about how they'd fucked. He fucked me soon after and I came when he told me that her pussy felt better than mine."

Despite knowing that they shared the same kink, it was still somewhat astounding to hear Marie give voice to the pleasures she experienced at her husband having spectacular sex with another woman.

"There's something irresistible about that, isn't there?" Christian asked as he loaded the dishwasher. "About the pleasure they experience with each other, I mean."

Marie looked out the window - Ruby and Adam were sharing a tender-looking kiss - and said, "There really is." She looked back at Christian, smiled, and asked, "Does it turn you on to watch them kiss?"

"Yes," he admitted as his gaze remained fixed on the passion unfolding on the deck.

"And are you turned on thinking about what we're going to do after we finish the dishes?" Marie asked.

Christian nodded as he registered the rather obvious lust in his sister's voice. Before their spouses had woken up he'd agreed that he would join Marie in preparing them both for the sex they’d unquestionably want to have. He'd agreed to get on his knees with his sister and join her in using his mouth to arouse both Ruby and Adam. From a certain perspective it was utterly mad to even consider doing such a thing with Marie, and yet in the moment it sounded like the hottest thing in the world to him.

"It's a strange place we find ourselves in, isn't it?" Marie asked.

Christian pulled his attention from the sight of the mild foreplay unfolding between his wife and his brother-in-law and saw his sister smiling at him. He couldn't help but notice that her nipples were now poking through her t-shirt, indicating an intense level of excitement at the prospect of the boundary-pushing fun they were planning on having.

"It's very strange," Christian answered. "That doesn't bother you, does it?"

Marie shook her head and smiled in a decidedly naughty manner, leaving Christian to wonder what exactly was going through his sister's mind. Given what they'd learned about each other - and what they'd both witnessed and done together, including swapping Adam's cum a handful of times - it seemed like almost anything was possible, a notion that he found far more exciting than he probably should have.

"Let's finish up," Marie said.

Christian worked hastily to clean up after breakfast, sneaking glances out onto the deck when he could to see Ruby holding Adam's hand, kissing him, caressing his leg, and on one occasion seemingly moaning as Adam's hand moved under her shirt to play with her perky tits and what were most likely her hard nipples.

"She has him in her hand," Marie observed as Christian dried the last of the pans they'd used to cook that morning.

He looked onto the deck to see that Ruby had freed Adam's cock and was kissing him with great vigor as she stroked his stiff shaft. Excitement coursed through Christian's body - and led to considerable growth between his legs - as he watched his wife openly express her desire for her brother-in-law's cock.

"I like that you're as turned on by this as I am," Marie said.

Christian turned to see his sister staring at the bulge in his crotch with a smile on her face. Her gaze found his, her smile slowly took on a decidedly wicked quality, and she reached out and gently caressed his cock through his shorts. Christian froze - with a towel in one hand and a mostly dried skillet in the other - and held his sister's gaze as she teased him with no more than a few moments of contact with the bulging proof of his arousal.

"We're so much alike," she said as her hand moved away from his cock, igniting just a hint of disappointment in Christian. "I like that about us."

"I do too," he replied.

Marie stepped closer and stared up at him for a moment - a moment in which Christian felt as though his sister was capable of almost anything - and said, "Let's see if we can help make Ruby and Adam's morning as pleasurable as possible."

It wasn't until she walked away that Christian realized he'd been holding his breath. His heart was pounding and his palms were sweaty from a mixture of arousal and fear.

Marie grasped the door handle, looked over her shoulder, and said, "Come. They need us, Christian. They deserve to have us offer our service, and we deserve to experience the joy of offering that service."

Christian followed his sister onto the deck and stood beside her as Ruby and Adam kissed while he received a slow, sensual handjob. They offered no acknowledgement that their spouses had just joined them, instead choosing to continue their indulgence in what looked to be a decidedly pleasurable kind of foreplay.

When they finally broke their kiss, both Ruby and Adam looked up and smiled. "Thank you for making us breakfast," Ruby said with her fingers still encircling her brother-in-law's cock.

"It was our pleasure," Marie replied with a smile. "And now, if you wouldn't mind, Christian and I would find it deeply pleasurable to offer our service in the name of your pleasure."

"What sort of service did you have in mind?" Adam asked.

Marie looked at her husband, smiled, and took Christian's hand. She squeezed it gently and said, "We'd both like to offer our mouths for your pleasure."

A surprised look crossed Ruby's face before she smiled, looked at her husband, and asked, "Is that true, Christian? Do you want to offer your mouth to both of us?"

Christian had agreed to do so - to join his sister in sucking his brother-in-law's cock and in worshiping his wife's pussy - and despite the almost overwhelming angst he felt in the moment, he nodded in agreement and said, "Yes, I want to offer my mouth...to both of you. I want to offer my service for your pleasure. I want to do anything I can to make sure you have the hottest sex possible, because that's what you deserve."

Ruby had watched him offer his tongue while she and Adam had fucked, but he was offering something far different and Christian was genuinely uncertain of how his wife would feel about it. For a few moments there was no expression on Ruby's face. Christian felt a tightness in his chest as he worried he'd just made a colossal mistake. Then Ruby smiled, stroked Adam's cock a little faster, and said, "I can't imagine anything hotter than seeing the two of you on your knees for us."

"Why don't you start with her pussy?" Adam suggested.

Ruby lifted her hips, pulled off her shorts and panties, and inched her ass forward until her pussy rested right at the edge of the deck chair she sat in.

Marie stepped in front of her, looked at Christian, and sank to her knees. She pulled his hand down with her and he dropped to his knees right next to her.

"Go ahead," Marie said softly. "Put your tongue in your wife's pussy. Taste her. Get her wet for my husband's cock."

Christian leaned forward, looked up at Ruby, and saw a beautiful smile on her face as he pushed his tongue inside her. He felt his sister's hand on the back of his head and Marie applied pressure, pushing him deeper into his wife's pussy and spreading some of her sweet juices over his lips and chin.

"Suck on her clit," Marie suggested.

Christian directed his attention to Ruby's clit and Marie joined him in offering oral worship. She sucked and licked Ruby's labia and pushed her tongue between the slippery folds of flesh. They worshiped together, offering their mouths just as they'd expressed a desire to do, and Ruby reached down, put a hand on each of their heads, and moaned like she was having the time of her life.

"It's a beautiful thing to watch," Adam noted.

"Brother and sister eating my pussy?" Ruby asked.

Adam nodded.

"Would you like them to worship you, Adam?" Ruby asked. "Would you like to see your wife and my husband happily sucking your big, beautiful cock and those glorious balls of yours? Would you like them to show how eager they are to worship you?"

"Fuck yes," Adam replied.

"Do as he desires," Ruby instructed as she looked down at them.

Christian kissed his wife's pussy and then shuffled to his right until he was on his knees in front of Adam. Marie joined him a moment later and reached up to hastily remove her husband's shorts and underwear, setting his big cock and heavy balls free to be worshiped by the kinky siblings.

"Take him in your mouth," Christian said.

Marie looked at him, smiled, and leaned forward to swallow her husband's cock. She held his gaze while blowing him in the way a worshipful, eager wife does. She played with his balls, too, right up until she reached back, put a hand behind Christian's neck, and guided him between her husband's legs.

"Suck on his balls," Ruby instructed as the sounds of her fingers entering her wet pussy drifted into the air. "Suck his balls while your sister sucks his perfect cock."

His wife's instructions joined the ever-increasing list of things Christian had never expected to hear and the thrill of being ordered to do something so spectacularly naughty coursed through his body as he did exactly that. He let Marie guide him to Adam's balls, took one in his mouth, and sucked gently. He swirled his tongue around the wrinkled, hairy flesh and felt genuine joy when he heard Adam moan. Marie quickly did the same and Christian couldn't help but join them, for he was fully immersed in the kind of kinky pleasure he'd become increasingly desperate for since discovering his wife's infidelity during their Christmas visit to his parent's house.

"Suck his cock with her," Ruby instructed in a breathless, lusty tone.

Christian licked and kissed his way up the shaft of Adam's cock as Marie released the head from the tight grasp of her lips. They worked the head together, licking and sucking on it while their lips and tongues touched, all in service of making Adam feel good and pursuing their mutual desire to ensure their spouses had great sex while they watched.

"This wasn't how I expected our vacation to unfold," Adam said as he reached out and put a hand on the back of each of their heads, just as Ruby had done.

"I know," Ruby replied, "but it's kind of irresistible, isn't it? I mean, their eagerness to please makes this all so much hotter."

Christian ran his lips up and down the left side of Adam's cock and Marie quickly did the same to the right side. The siblings used their tongues to enhance his pleasure, sucking like they were the two stars of a very naughty porn movie where absolutely nothing was off limits.

Ruby leaned over and Christian looked up to see his wife offer her tongue to her brother-in-law. He listened to Ruby moan while he gave a blowjob with his sister. For just a moment he considered that he'd found his way into an utterly insane situation, and yet he was undeterred by that realization. In fact, it was quite the opposite. He wanted to sink further into the kinky pleasure he felt in that moment. He wanted to do whatever his wife and brother-in-law desired because it felt so fucking good to surrender to that part of himself.

"Suck the head together," Ruby instructed as she ran her fingers under Adam's shirt and caressed his stomach and chest. "Show him how eager you both are. Show him what good cocksuckers you can be."

Christian and Marie worked their way to the head of Adam's cock and did as instructed. The licked, kissed, and sucked on the head. Their lips and tongues met over and over as they gave themselves completely to the task of pleasuring the stiff cock in front of them. They even both reached up to play with Adam's balls at the same time and their fingers entwined as they offered him pleasure that had his moans drifting into the air and had Ruby wearing a look of intense lust on her face.

"I need you inside me," Ruby said. "You two, stay right there on your knees as I ride him. Suck his balls. Kiss my ass. Lick my asshole. Serve us as we fuck."

Christian and Marie backed away from Adam's cock. Ruby deftly straddled him, reached down to guide his cock inside her, and sank down on it. They kissed as she took every inch, remaining there for a few moments as Adam's hands moved down her back, grabbed her ass, and spread her cheeks.

"Eat her ass," Marie said.

Christian didn't hesitate. He pressed his face between his wife's lovely ass cheeks and put his tongue to work. He rimmed her beautiful hole as Ruby rocked her hips back and forth on Adam's cock, milking him with her slick pussy and making them both moan as they moved from foreplay to fucking in their naughty foursome.

"My turn," Marie said.

Christian pulled his head away and watched his sister give Ruby a beautiful rimjob. She licked fervently and then stiffened her tongue and used it to poke at Ruby's asshole, pushing just a little bit inside for a beautifully kinky kind of penetration that elicited a long, low, lusty moan.

"Suck his balls," Marie said with a smile before returning to the task of eating Ruby's ass.

Christian dropped down and took his brother-in-law's balls into his mouth. He sucked his wife rode Adam's cock a little faster, grinding her clit into him in the process and no doubt providing herself with the kind of pleasure she sought, and the kind that only Adam was capable of delivering.

"Fuck, this feels so fucking good," Ruby cried out.

Adam laughed delightfully. "I know," he replied. "They're just so fucking eager to help, aren't they?"

Christian heard the sounds of passionate kissing as Ruby leaned over and undoubtedly offered Adam her tongue as she began to bounce on his cock. The sounds of her slippery pussy riding his thick shaft rang out loudly in Christian's head as he looked up to see Marie's head moving up and down with Ruby's ass as she did her best to continue putting her tongue to work.

"Suck his balls with your brother," Ruby said as she looked over her shoulder. "Pleasure him while he enjoys the pussy he prefers."

Marie moaned - in what sounded like absolute pleasure - and dropped down. Her cheek pressed against Christian's as she took one of Adam's balls in her mouth and sucked. They did as Ruby desired, worshiping Adam with their mouths while she rode the cock that she preferred, the cock that she'd dreamed about since Christmas, the cock that she'd given herself to countless times since their affair had begun quite some time ago.

Ruby rode him hard and fast, bouncing her pussy wildly on his long, thick, slick cock. Her juices poured down his shaft and coated his balls and both Christian and Marie licked and sucked up every drop while they continued to make love to Adam's sack.

"I want you to cum inside me," Ruby said. "Cum in my pussy, Adam. Cum in the pussy you prefer. Cum in the tight, wet pussy that's milking your beautiful cock."

"Mmm, I'm gonna flood your tight hole," he replied. "But I need you to cum on my cock, Ruby. Cum on my cock - the cock that you so clearly prefer - while your husband is sucking my balls."

Christian desperately wanted to masturbate. He wanted to stroke his cock and cum so fucking hard as he played his part in the pleasure his wife and brother-in-law pursued with each other. He restrained himself, though, choosing instead to concentrate on the intense pleasure of the sexual experience he was immersed in.

"Fuck, I'm cumming!" Ruby cried out.

Adam's testicle jumped in Christian's mouth and he let out a series of grunts and groans as Ruby took the full length of his cock inside her pussy, ensuring his cum would be deposited deep in her womb.

"Fuck!" Adam screamed. "That feels so fucking good!"

Marie released her husband's balls from her mouth, kissed her way over Ruby's beautiful ass, and then spread her cheeks to give a soft, gentle rimjob.

Ruby put a hand on the back of Marie's head, looked over her shoulder, and said, "That's a good girl. Eat my ass. Tongue fuck my hole. When you're done I'll let you lick your husband's cum out of me."

Christian was surprised to feel a wave of jealousy wash over him. He didn't say a word - it felt strange to try and plead for his right to lick another man's cum out of Ruby's pussy - but he let himself enjoy the sudden desire he felt to do so.

Ruby and Adam kissed as Marie gave a rimjob and Christian continued to suck on his brother-in-law's balls while he watched and listened to all of it, soaking in the strange, kinky pleasure of being involved in yet another foursome unlike any he'd ever imagined.

Ruby then lifted her pussy from Adam's cock, quickly spun around, and sat across his stomach as she spread her legs wide. "Clean me," she said to Marie. "But don't swallow."

Marie pushed her tongue into Ruby's pussy, looked up at her, and went to work as Christian watched from a foot away. It was astonishing to witness his sister's depravity, and yet he knew he would have done the same thing if offered the chance. They really were so much alike.

"I want to see my cum on your tongue," Adam said as he put a strong arm around Ruby and held her close.

Marie leaned back, opened her mouth, and extended her tongue, showing the thick white cream that coated it.

"Share it with Christian," Ruby instructed with a smile on her face.

Marie turned to Christian, pulled her tongue back into her mouth, and smiled for a moment. Then she lunged forward and pressed her lips against his. Her tongue pushed deep into his mouth and Adam's cum came with it.

"Mmm, isn't that beautiful," Ruby said softly.

"I think he likes it," Adam noted.

Christian knew he shouldn't have liked it, and yet he couldn't help but get caught up in the sheer kinkiness of it. The kiss was over almost instantly, though Marie managed to transfer most of the cum into his mouth in that instant.

"Was that what you wanted?" Marie asked as she turned back to Ruby.

"That was beautiful," Ruby replied. "Now I want Christian to put his tongue in my pussy. He deserves a chance to clean me, after all."

Marie moved aside and Christian took her place. He ran his fingers up his wife's legs, leaned forward, and put his tongue inside her. Ruby put a hand on the back of his head and he closed his eyes and felt a blissful sensation wash over him. His morning had been unlike any other he'd ever experienced and he felt as turned on as he ever had.

Thankfully, there were a few more days until their vacation was over, which meant there was more fun to be had.