The next afternoon, Catherine and Ruth went to do some last minute Christmas shopping together to get to know each other a little better. And while Matthew was at work, Ted talked Vince into going jogging with him. Mark claimed he had some work to do, and wanted to spend some time alone.
When the others had left, Isabelle bounced up the stairs and knocked on Mark's door.
"Come in," he called.
Isabelle opened the door quietly and peeked in at him, sitting at the desk, poring over some boring-looking documents. She smiled teasingly, and walked sexily over to him, swinging her hips as she did so, running her tongue over her lower lip.
He looked up at her. "Yes; what can I do for you?"
"We've got the house to ourselves," she said with a suggestive tone to her voice, her eyes wandering lustily over his tall, lean handsome form, admiring his dark hair and features.
"Aah, look, Isabelle. I've been giving this some thought. I don't think we should take any more chances. We're really risking it, you know. I mean, what if we get caught again, by someone other than Ted. We were just lucky he was willing to participate and keep quiet about the whole thing."
She lowered herself next to his chair, and began running her fingers through his wavy dark hair. She leaned up to plant little kisses on his cheek.
"Mmmmmmm, I suppose you're right. We really shouldn't be carrying on like this. But, you're so-o-o-o good, Mark. I just can't keep my hands off you." With her other hand she started to rub his chest. I like you, Mark. You're so handsome and so well-built. And so-o-o well hung. It's a shame to let all that gorgeous cock go to waste. So come on. You're right, we shouldn't risk it. But nobody's here. And no one will be back for at least an hour.
She had let her hand drop to his lap where she was feeling around for his cock. She found it and started massaging it through his robe, feeling it respond to her caresses. His lips might have been saying no, but his cock was definitely saying the opposite, and was soon to change his mind for him.
Isabelle raised her lips back to his face and kissed him hotly, lovingly on the mouth as she continued to fondle and stroke his cock, which grew larger and firmer with each passing second. She knew that when she plunged her tongue in his mouth and started preaching with him, he would soon come around.
Mark slowly turned himself more and more sideways in his chair, to better enable Isabelle to get at him, to bitter enable him to wrap his arms about her, feel her silky blonde hair, run his hands down her shapely sides and back. He parted his lips and let her tongue enter his mouth. He spread his legs and let her hand dig his burgeoning cock up from between his thighs.
He moaned with delight into her mouth as she parted his robe and fished out his throbbing cock. God, he thought, that feels so good. She really knows how to take care of a man. She really is a terrific person, and so eager to please, so willing to open herself up to others. How could he resist her? He wondered. How could he possibly say no to her?
Plus, the way Matthew ignored her so much, it was only fair that he treat her kindly. It was only fair that he provide her with the kind of attention she so deserved, that she so obviously needed, that she so desperately craved.
He wriggled his ass and shoved his hips a little forward on the chair and spun around all the more. He hummed with delight as he felt her hot hand wrap around his already stiff, throbbing cock.
She had him going now. She had him excited. He could feel the oily beads of precum already oozing out the slit of his huge fuck knob, and he knew he wouldn't be happy, he wouldn't be satisfied until he had fucked her one more time before he left.
Isabelle sucked on Mark's tongue all the more frantically when she felt his cock getting harder and harder. She began, a slow, gentle, pumping motion up and down his thick cockshaft with her hand as she hummed into his mouth.
Then she brought herself up, let go of his cock, lifted her skirt and sat on his lap, facing him. She nuzzled against him, spinning the chair around a little more so it would lean back against the desk. She wrapped her arms about his neck as he scooted down farther in the chair and smiled up at her.
Isabelle continued to rub her wet cunt against his cock, which was resting straight up against his belly. She massaged and tickled her clit against his pulsing cock as she smiled into his face. Back and forth, round and round, she worked her cunt over his cock until she had her pussy good and lubed up, good and excited, ready to feel the hardness of his cock stuff up deep inside her hungry steaming cunt.
"Mmmmmm," she hummed. "That feels so good, yes. This is absolutely wonderful! Oooooo!"
She smiled delightedly into his handsome face as she continued to work her dripping cunt over his stiff cock. She leered at him with lusty eyes as she ground her groin against his. She rowed her hips and thrust her ass forward, grinding, pumping, squeezing her cunt against his hard cock, getting herself higher and higher, getting herself closer and closer to orgasm, getting herself more and more ready to plant herself right on his stiff throbbing cock.
Mark held her ass with both hands, kneading her firm smooth round ass-globes, pulling them forward, twisting her cunt around his eager rigid cock all the more furiously. He hummed low and smiled back up at her.
"You know, you're just the thing for a lonely neglected guy like me. I'm enjoying this trip more than I thought I would. I love the way you're treating me. Your cunt feels so good working over my cock like this."
Isabelle licked her lower lip and leered at him. "Well, then what are we waiting for?"
She lifted her hips up off his, reached down to snare his wildly pulsing cock, and pressed the huge engorged knob of it against her flaming wet, gaping pussy. She let go of it and nuzzled it a little with her cunt, feeling it poke gently inside her wet waiting cunt-hole. She wriggled her ass again and bounced slowly up and down a few times to feel his hard long prickshaft slide ever so slowly inside her hot tight cunt.
"Mmmmmm, that's so wonderful. God sure knew what she was doing when she invented sex. You know, that?"
She leaned forward and kissed him appreciatively as she continued rocking her hips up and down, back and forth, squeezing her legs against his sides to work more and more of his long hard cock into her hungry pussy.
Soon, they had a steady, rapid, rhythm going, Mark thrusting his hips up to stab more and more of his rigid cock into his sister-in-law's gorgeous blonde cunt as she bounced her hips up and down, forcing her groin closer and closer to his, feeling his long stiff cock slide as deep into her hungry pussy as possible.
Mark pulled his lips off hers and clutched her tightly to him as he felt his climax welling up in his balls. He whispered hoarsely and frantically in her ear.
"Oh, Belle! This is magnificent. I never seemed it could be so good. Mmmmm-mmmm."
"Your cunt feels so good, working up and down my cock. It's so nice and tight. You're going to have me shooting my load too, soon. I'm sorry, Belle. But I just can't take too much of this. You just get me too worked-up."
He hugged her head and breathed warmly and rapidly on her neck and shoulder as he thrust his flaming cock into her moist cunt all the harder. His legs twitched and jerked spasmodically as he felt his balls screaming out for release.
"Oh, yes yes yes, Mark. Don't worry about me. I'm with you all the way. You had me tingling with orgasm the minute I felt your cock slide in my pussy. Oh, yes yes yes! I'm coming! I'm comiiinnnggg!"
She bounced furiously away on his slick cock, slapping her wet loins harder and faster into his, crashing her crotch against his with loud sloppy sounds as they clutched each other tightly and exploded together. They fucked frantically and powerfully, grunting and humping for dear life as their orgasms flashed like lightning throughout their bodies.
When it was over, Isabelle kissed his face and head fervently, holding his handsome face between her hands as she rocked back and forth on his lap, clenching his flagging cock with her tight pussy muscles to milk the last of his cum out into her dripping pussy.
When they caught their breath, Mark looked her in the eyes and said, "You know, we don't have much time, but you've got me so worked up, I can't stop now. I need to feel your nice tight cunt wrapped around my cock as long as possible. I want to feel my cock thrusting in and out of your pussy again. This might be the last chance we ever get."
She looked at him with wild eyes, thinking the same thoughts he was. She didn't know when she would ever again be fucked so grandly.
"Oh, yes, Mark, yes. I'm all yours. I can't get enough of your gorgeous cock. Fuck me again, Mark. Fuck me all you want. Yes, Mark, yes. Fuck me!" She drowned him with wet kisses as she ground her cunt around on his half-stiff cock.
He clutched her ass cheeks firmly in his hands and lifted her up. "Wrap your legs around me," he whispered hoarsely, frantically. He got up and carried her to the bed where he laid her flat on her back. He removed his robe and climbed on the bed, but before he could position himself in a satisfactory way to fuck her again, she latched onto his semi-hard cock.
"We need to pump this up first," she said, and pulled his cock into her hungry mouth. He switched around, and soon they were devouring each other's crotch simultaneously.
Mark licked and sucked her pussy to another orgasm while she blew new life in his burgeoning cock. Long low moans and groans of pleasure issued from her throat as she pulled his half-stiff cock inside, deep, all the way back into her throat. She sucked and slurped on his cock until it grew too long and too hard to fit in her mouth.
Mark rotated his hips and thrust more and more of his cock into her talented mouth. Her mouth felt so good on his cock, it didn't take him long to get another raging hard-on – this one firmer and longer than before – and pulsing with the desire to plunge deep in the pussy he was greasing up with his mouth.
The delicious taste, the fragrant smell, the silky feel of her warm moist cunt flesh also aided in bringing his cock back to fuck-status. She had one of the tastiest pussies he had ever had the pleasure of having the pleasure of. He licked her cunt to two more orgasms while she inflated his cock.
When his cock was ready, pulsing with the renewed blood of desire, they rearranged themselves and he fucked her from behind. His cock sank into the depths of her drooling cunt with one swift stroke. In a matter of seconds, they were chugging and shrieking as she exploded in another mind-shattering climax.
He collapsed on top of her sweaty heaving back, her pointed nipples pressing into the palms of his hands beneath her. He kissed her neck warmly.
When she squeezed her cunt muscles she realized his cock hadn't gone limp.
"You didn't come?"
"Not yet, Belle. I wanted to make this the best ever. I wanted us to have something to remember."
"Would you like to fuck me in the ass, Mark?"
He smiled. "If you don't mind."
"No sense in being so timid about it," she kidded. "If you wanna fuck me in the ass, that's more than fine with me. But do it like you mean it. You don't have to ask sweetly. Just take me, Mark. Take me. Just ravage my body. Fuck my asshole like there's no tomorrow. And there might not be. Not for us together, anyway."
Mark hesitated, leered at her lustfully, then did what he wanted to do. And what he knew she wanted. He pulled his cock out of her pussy and yanked her ass up in the air. He slicked up has asshole with a mouthful of spit and grabbed his excited slippery cock.
Isabelle rated her cheek on a pillow and reached back to spread her ass cheeks as far as possible, opening up her back door for easier entry. She shuddered when she felt his thick cockhead press against her tiny asshole, but she instantly reined and pushed back, swallowing up the huge throbbing fuck knob and several inches of his long, slick prick shaft.
Before long, Mark was fucking her asshole wildly, sending her into ecstasy as she grunted and whimpered with each mighty thrust. She peered through slitted eyes when she heard the soft rustle of someone's presence in the room. She opened her eyes wider and looked up past two quavering rigid cocks into Ted's and Vince's smiling face.
"We just got back from our jog," Ted smiled, "and thought you might like some… help."
"Mind if we join you?" Vince asked, his voice dripping with sex, his cock twitching invitingly in Isabelle's face.
Isabelle smiled warmly as she got a brilliant idea. She reached out with one hand and squeezed first Ted's long throbbing cock then Vince's, while Mark continued to pound away at her asshole. She could already feel the excitement in her cunt mounting as she anticipated fulfilling yet another of her wildest dreams.
"Why, you just can't imagine how happy I am to see so many warm willing cocks all eager to satisfy me at the same time. Let's not waste another minute."
Before she knew it, the two newcomers had joined her and Mark on the bed, and while Ted fucked her from underneath, and Vince shoved his huge, hunk of cock in her mouth and Mark continued to fuck her asshole, Isabelle felt herself floating blissfully off to sexual heaven.