The Summer Rental - Part 6

Click here to read the previous parts of the story.

Christian stared up at the ceiling as he thought of what was unfolding in the living room of the rental house. He thought of the threesome - of a sort, at least - one floor below. He thought of his sister watching her husband fuck another woman. He thought of Ruby's overwhelming enjoyment of her brother-in-law's cock and the added, kinky thrill of Marie getting off on watching her husband satisfy someone else's pussy.

Those thoughts left Christian with quite the erection as a wealth of erotic energy surged through his body as he debated whether or not to accept his wife's invitation to join them and watch their threesome unfold. He'd already watched once, of course, and he'd thoroughly enjoyed that. This would be different, though. This wouldn't be a voyeuristic experience. This would be Christian watching with his wife, sister, and brother-in-law's knowledge.

In the end, it wasn't much of a debate. Christian pulled the covers aside, put on a pair of pajama pants, and left the bedroom. It wasn't until he reached the top of the stairs that he heard the sounds of pleasure. He couldn't be certain, but it sounded like a blowjob was unfolding in the living room.

Adam very clearly moaned as Christian reached the bottom of the stairs. "Fuck, you two really know how to make a man feel good," he said.

Christian peered around the corner and saw the back of Adam's head as he sat on the couch. Ruby and Marie were out of sight, but based on Adam's comment, they were most likely on their knees in front of him. Christian looked down to see a tent in his pajama pants as he silently compared himself to Adam, a man who'd compelled two women to get on their knees to suck his cock and give him the sort of pleasure they clearly believed that he deserved.

"Sit on my cock," Adam said.

A moment later Ruby's head popped up as she climbed into Adam's lap. She looked right at Christian as she did and a smile came over her face. Then her lips parted, her eyes closed, and she let out a long, low moan while filling herself with her brother-in-law's cock.

"How does it look, baby?" Adam asked.

"It's beautiful," Christian heard his sister reply. "How does her pussy feel?"

"She has a perfect, tight, wet pussy," Adam said. "You know that, baby. That's why I love fucking her so much. That's why I've been fucking her for years."

Christian listened to his sister moan. He understood her feelings, for he moaned in that same manner every time Ruby confirmed that she thoroughly enjoyed Adam's cock.

Ruby opened her eyes and looked at Christian once more. Then she lifted a hand and beckoned him closer. "Come here, baby," she said. "You don't have to be scared. Come and watch."

Marie's head popped up and Christian saw surprise in his sister's eyes. That looked remained for just a few moments, though, as her lips quickly curled into a smile before she said, "I guess we're more alike than we ever knew, aren't we?" she asked.

Christian nodded. It still felt a little strange to know that he and his sister shared a very particular desire - to see their spouse thoroughly enjoy sex with someone else - but there was no denying the truth of it.

"Come on, Christian," Adam said. "Don't be shy. Come and watch your wife ride my cock."

No one seemed put off by his presence, so Christian joined them in the living room. His excitement was on full display - the bulge in his pajama pants was considerable - and though it felt a little awkward to enter into what had been a threesome, Christian couldn't resist the urge.

"Look at how excited he is," Ruby said as she turned to look at the tent in his pants. "Why don't you take your cock out, baby? You can play with it while you watch me ride Adam's big, beautiful dick."

Christian tentatively slipped his fingers into the waistband of his pants and underwear and pulled them down, revealing his throbbing cock. A wave of excitement washed over him as he felt a surprising sense of freedom at having fully exposed his overwhelming desire.

"I wonder," Adam began as he looked at Marie, "if your brother might enjoy watching you eat his wife's asshole while she rides my cock."

Marie glanced at Adam, smiled, and then crawled between her husband's legs. She reached up, spread Ruby's tight, perfect ass cheeks, and then leaned forward and pressed her face between them.

"Oh, fuck," Ruby said as she leaned forward, helping her cheeks spread further and giving Marie complete access to her asshole. "That feels so fucking good."

"Reach back," Adam instructed. "Push her face between your cheeks."

Ruby did so gleefully and she turned to look at Christian as she did so. He listened as his sister moaned while the sounds of a fairly wet rimjob filled the living room.

"Ride me," Adam said. "Ride me with that perfect pussy of yours, Ruby."

"With pleasure," Ruby replied.

With her hand on the back of Marie's head, Ruby slowly rode Adam's cock. Up and down her ass went as she let every inch depart the warm, wet confines of her cunt before sinking back down on it again. Marie's tongue continued to fervently work Ruby's asshole throughout as she seemed unwilling to cease doing as her husband had instructed for even a moment.

It was only when Ruby released her grasp that Marie came up for air, leaning back and gasping before reaching up to wipe the saliva from her lips and cheeks.

"Do you think your husband might enjoy worshiping your ass while you ride Adam's cock?" Marie asked.

Ruby sat down on Adam's dick - holding every inch of it inside her - and looked over her shoulder. "What do you say, Christian? Would you like to join your sister on your knees and eat my ass while Adam's big, beautiful cock stretches my tight cunt?"

"Yes," Christian answered. He didn't have to give it a moment's thought, for the intense surge of desire that rushed through his body was absolute proof that he wanted to indulge in something so naughty.

Marie moved to the side and gently patted the floor between Adam's legs. She smiled as Christian stood and crossed the room before slowly dropping to his knees. "I promise, your wife's asshole tastes good," she said.

Lust rushed through his body - hearing his sister utter those words proved to be far more exciting than Christian expected - as he spread Ruby's ass cheeks, leaned in, and pressed his face between her flesh. He put his tongue to work just like his sister had and Ruby began to ride Adam's cock.

Christian thought of how he was tasting Marie's saliva while eating his wife's asshole. He thought of how his tongue was traveling exactly where his sister's had traveled and how impossibly kinky that felt. His cock throbbed painfully and he felt precum dripping from the tip and falling to the floor, all while his wife rode another man's cock just a few inches from where his lips and tongue were working.

"Her turn," Ruby said.

Christian backed away and his sister quickly took his place and resumed worshiping Ruby's ass while she rode Adam's cock harder and faster. Christian reached down, wrapped his fingers around his stiff dick, and slowly masturbated as he soaked in the erotic pleasure of the kinkiest experience he'd ever been a part of.

They switched back and forth - with both of them feverishly worshiping Ruby's ass when given the chance - until Ruby lifted her pussy from Adam's cock and sat on the couch next to him. Christian looked up at her and Marie looked up at her husband, both of whom smiled down at their kinky spouses.

"Suck the taste of her pussy off my cock," Adam instructed.

Christian watched his sister lean forward and greedily swallow her husband's cock. He would have kept watching, too, but Ruby grabbed a handful of his hair and pulled his attention to her.

"Suck and lick the taste of his cock from my pussy," she instructed.

Christian smiled as Ruby pulled him between her legs. He licked and sucked on her plump, slippery labia, tasting a mixture of her pussy juices, what must have been Adam's precum, and a bit of sweat. Then he plunged his tongue inside her and bathed it in the taste of their fluids, all while his dick throbbed so hard it hurt, though in the best way possible.

"They're so much alike," Adam said.

Ruby smiled and leaned towards him. "I think they married two people who are very much alike, too," she replied. They shared a deep, tender kiss that included both of them moaning and Christian looked up to see their tongues entwined while they were serviced by their spouses.

"Sit on my dick," Adam said to his wife. Marie hopped to her feet, straddled her husband, and took him inside her. She tried to ride him but he grabbed her hips and held her in place. "I didn't say you could ride me. I told you to sit on my dick."

"Please," Marie begged as she tried to lift her hips while Adam kept a tight grip on her flesh.

"You want it, don't you?" he asked. "You want to take my big cock for a ride, don't you? You want to cum all over it, don't you?"

Marie nodded vigorously and tried to move her hips back and forth to grind on his cock. Adam grabbed her ass with his strong hands and held her in place, defeating her intense desire. "Please, Adam, it won't take long for me to cum. It won't. Just let me ride your cock a little. Let me make my pussy cum."

Ruby pushed Christian's head out from between her legs and stood. "Get on the couch," she said. Christian hopped to his feet and sat on the couch. A moment later he was inside his wife as she straddled him and let him invade her pussy.

"Oh, fuck," he said. Without thinking he reached out, grabbed her hips, and tried to move her back and forth over his cock. Ruby quickly took his wrists in her hands, pulled them away from her hips, and placed them on her perfect, perky breasts.

"You want what your sister wants, don't you?" she asked. "You want to orgasm, don't you?"

"More than anything," he answered.

Ruby looked at Adam, smiled, and said, "Are you going to let her cum on your cock?"

Adam looked at his wife and Christian couldn't help but follow his gaze. He saw a look of genuine desperation on Marie's face and he understood how she felt. She was immensely aroused - perhaps more so than she'd ever been - and she needed to cum. She wasn't in control of her ability to orgasm, though. Not in that moment.

"No, I'm not going to let her cum on my cock," he said. "Not right now, at least."

Marie's face contorted in a sort of pain and her voice dripped with desperation as she said, "Why not?"

"Because her pussy feels better," Adam said before giving his wife's ass a hard smack. "Because she makes me cum harder than you do."

Marie moaned with every word, as if Adam knew exactly what to say to deepen his wife's arousal and desperation. "Please, Adam, just let me ride you."

Adam grabbed her hips and for a moment Marie looked hopeful. Then he lifted her pussy off his cock, smiled, and said, "I want to feel your mouth on my balls."

Christian expected his sister to resist, but instead Marie climbed off of his lap, dropped to her knees, and took his balls in her mouth. She stroked his cock and looked up at him with pure, perfect lust in her eyes while doing so, displaying her obvious enjoyment of being denied what she truly craved.

"You know I'm not going to let you fuck me right now, don't you?" Ruby asked as she remained still in Christian's lap. "You know that you're just like your sister, that you don't fuck me as well as Adam does, that you don't make me cum as hard as he does."

Christian nodded. Ruby had never been quite so explicit about it, but he knew it was true and it turned him on to hear it. "Can I fuck you after he cums inside you?" he asked.

Ruby smiled, leaned down, and kissed him softly before saying, "Maybe, but only if you're a good boy."

Christian very nearly came inside her before she lifted her pussy from his cock, stood, and then spun around before straddling Adam and sitting on his dick in reverse cowgirl.

"Lick her clit," Adam said to his wife. "Lick you sister-in-law's clit while she rides my cock."

Marie went to work without hesitation, licking her way up Adam's shaft until her tongue found Ruby's clit. Her head moved up and down to match Ruby's riding of Adam's big cock and Christian watched as he slid onto his knees. He hadn't been told to get off the couch, but it felt right to watch from his knees.

"Look at her," Ruby said to him. "Look at your sister licking and sucking on my clit while her husband fucks me. Look at how much she enjoys participating, Christian. Look at how much she enjoys helping me enjoy her husband's cock. She's setting a good example for you, Christian. She's showing you how it's done, how someone like you should behave when your wife is getting the kind of fucking she craves."

She was right. Marie was truly dedicated to their pleasure as she played with her husband's balls while licking and sucking on Ruby's clit. She'd been denied the orgasm she craved, but that hadn't dissipated her desire to make them feel good. If anything, it seemed to deepen her lust in a rather remarkable manner.

"Work my balls with your mouth," Adam instructed. Marie dropped lower without hesitation and she did so with a moan, indicating that she enjoyed her husband's level of control.

"Can I...can I help?" Christian asked as he stared at his wife's pussy and his brother-in-law's cock moving in and out of it. "Can I...can I lick your clit?"

Adam spread his legs a little wider, making room for both Marie and Christian between them.

"You're so sweet," Ruby said. "Of course you can help. Go ahead. Crawl next to your sister and lick my clit while I ride Adam's big cock."

Christian felt a little lightheaded as he crawled closer to his sister. She looked up at him without letting Adam's balls fall from between her lips and her eyes sparkled with lust. Part of Christian couldn't believe he was about to join Marie in helping their spouses have more satisfying sex and part of him was as excited as he'd ever been.

"Lick my clit, baby," Ruby encouraged him. "Lick my clit while your lovely sister sucks her husband's big balls. Help us feel good. Be a good boy for me."

Christian leaned forward and went to work. His tongue found his wife's clit and he licked. He moved up and down as she rode Adam's cock and he kept the tip of his tongue working hard to provide that beautiful stimulation that he knew Ruby deserved.

"Oh, fuck," Adam said. "Your pussy feels so fucking good, Ruby. Your tight, wet, perfect pussy feels so fucking good riding my dick."

Marie moaned as her husband complimented another woman's pussy and Ruby couldn't help but join in. She rode him a little faster and Christian struggled to keep up with his wife's clit. A few times his tongue instead licked along his brother-in-law's shaft, but Christian found it unexpectedly thrilling, letting out a moan that seemed to put a smile on his wife's face.

"I'm close," Ruby said after a good, hard ride. "Adam, baby, I want you to cum with me. I want you to cum inside me."

They fucked harder and faster as Christian kept his tongue working over his wife's clit and his brother-in-law's stiff, slippery shaft. They were fucking with such speed as they approached their orgasms that he couldn't really tell whether he was licking cock or clit, but it didn't matter. He was doing his part. He was helping them in their pursuit of pleasure and he was bathed in the kinky thrill of a foursome unlike any he'd ever imagined.

"Oh, fuck, I'm cumming!" Ruby called out.

Adam unleashed a torrent of grunts and groans a few moments later and Marie moaned, perhaps because she felt her husband's balls jumping in her mouth while they spurted hot cum inside Ruby's pussy.

Christian gently licked his wife's clit right through her orgasm and then backed away, as she tended to get extremely sensitive after cumming. Marie continued to nurse her husband's balls, though, sucking while she looked up at the two people who'd just experienced the orgasms they craved.

"I want you to clean her pussy," Adam said to his wife. "Don't swallow, though."

He lifted Ruby's cunt from his cock and Marie went to work without hesitation. She pressed her lips against Ruby's plumb labia and pushed her tongue inside to feast on her husband's thick seed. Christian was stunned at how thrilling it was to witness his sister clean his wife's pussy and he couldn't help but slowly stroke his cock as he did so.

"Share his cum with my husband," Ruby said. "Spit some of it into his mouth."

Christian's eyes went wide as he looked up at his wife, but the absolute delight on her face convinced him that going along with her desire was the only choice, for it was clear how happy it would make Ruby.

Marie sat up on her knees with a mouthful of cum and crawled towards Christian. He crouched down, tilted his head back, and parted his lips. Marie's face appeared above his own and she smiled for a moment before pursing her lips and leaning down. A moment later her lips parted and her husband's thick cum poured out and onto Christian's tongue.

His taste buds exploded with the saltiness of Adam's cum and Christian's entire body hummed with kinky energy as his sister shared a load of cum with him.

"Wow," Adam said. "That's so much hotter than I thought it would be. I love the way you think, Ruby."

Christian heard the sound of wetness and glanced over to see his wife masturbating as she watched him welcome Adam's cum into his mouth. It thrilled him that the naughty display turned her on and his cock pulsed between his legs.

"Swallow," Ruby instructed. "Both of you."

Marie sat back on her knees, smiled at Christian, and swallowed the cum in her mouth as he did the same thing. They both turned towards Ruby and parted their lips to show they'd followed her instructions.

"Fuck, I need to get fucked again," Ruby said. "That was so hot that I absolutely must have your cock inside me again, Adam."

"You know what to do, baby," Adam said to his wife.

Marie crawled between his legs, leaned in, and took his softening cock in her mouth. As she did, Ruby climbed off of Adam's lap and sat next to him. She put a hand on his thigh and rubbed it slowly as he looked her way. They shared a beautifully tender kiss and Christian watched it all unfold as that same kinky, hugely erotic energy flowed through his body.

It was the last thing he expected to happen on their vacation, and yet the foursome that had just played out was the single most thrilling experience of his life. It made him deeply happy that their trip was only half over, for that meant there was a great deal more fun to be had.