Just a Mom and Her Son
Copyright© 2026 by Hipparchus
Chapter 3: A Prequel, How Mom and Son Became Lovers
Incest Sex Story: Chapter 3: A Prequel, How Mom and Son Became Lovers - The first in a series about a mother in a well established intimate relationship with her son. Part one, she introduces a friend into the joys of mother/son intimacy.
Caution: This Incest Sex Story contains strong sexual content, including mt/Fa Consensual Heterosexual Fiction Incest Mother Son
Kate Tomlinson arrived home after a long day, looking forward to the weekend. As she went through the mail, she saw the letter she had been waiting for; her divorce was complete. Not that it mattered, she felt. Only forty-one; the few dates she went on were busts, and she wondered if she was being picky about men.
Kicking off her heels, Kate poured herself a glass of wine, then proceeded out back, where, as she expected, her sixteen-year-old son, his school year over, was in the pool.
“Gonna spend the whole summer in there?” she teased, walking up to the pool.
With her long legs complimented by her short skirt, Tom watched as his mother sat on the pool ledge, dipping her feet in the cool water.
“Come in, Mom.” he suggested.
“Inviting, but no. I don’t feel like changing into my suit.”
“Then skip the suit.” he grinned jokingly.
“Tom! What? Hoping to see your mother naked?” she retorted.
“Tell you what, I’ll start dinner, and you can have the pool all to yourself, and I promise not to peek. There’s an extra towel on the chair.”
As Tom hauled himself out of the water and dried off, Kate reflected on the man he was becoming, imagining the girls in his school easily falling for him.
“I’ll start dinner.” he repeated before heading inside, tossing the towel beside her.
As the patio door closed behind him, Kate pondered why she couldn’t find a man like her son. She was proud of him—proud of the way he helped out and proud of his good looks.
Kate looked at the tempting water, then at the house. Hoping he would keep his promise, she unbuttoned her blouse, then dispensed with her bra, her ample breast falling free, and after slipping off her skirt and panties, she jumped in the pool. It had been a long time since she swam naked, and she floated, reveling in the sensuality of it all.
“That was lovely, thanks.” Tom heard his mother say as he stood at the stove.
He turned to find her wrapped in only the towel, giving him a pause. Tom had long thought of her as a MILF, but seeing her like that was incredibly sexy.
“Let me change, and I’ll set the table.” she said, kissing him on the cheek.
Over dinner, Kate talked about her day before turning to another subject.
“Thank you for letting me have to pool to myself. I used to love swimming naked, well before you got a little too old.” she said.
“You like swimming in the nude?” he asked.
“Oh yes. Something liberating about it ... The cool water on your skin on a warm day. Mmm...”
“I’d like to try. We both could skinny-dip tonight?” he suggested.
“Tom! Not sure if that’s appropriate.”
“Why? What’s the big hangup of us seeing each other naked?”
Kate didn’t have a ready answer. In fact, she was rather curious about her son’s package, wondering how he turned out. Plus, the wine she drank so far had loosened her up.
“Alright, if you’re game.” she grinned.
After they cleaned up, both headed to their rooms, emerging with only a towel wrapped around them, meeting up at poolside.
“I won’t look. You go in first.” Kate said.
“Mom! You’re seen me naked before.”
“Not since you became a man!”
Her comment struck Tom, and adding to the thought of finally seeing her naked was having its effect on his dick, and he realized that might be for the best.
The towel tossed aside, he dived in; with the splash, Kate turned to find him in the water.
“Your turn, Mom.”
“Turn around first.”
He obeyed, and Kate let the towel drop, following him by diving into the pool.
“It does feel nice.” Tom grinned when his mother surfaced.
“Yes, it does.” she replied.
Without thinking Kate floated on her back, giving her son a fine look at her generous tits poking out of the water. She quickly realized what she had done and sank into the water, looking bashfully at her son, who was clearly leering at her. They swam about, with Tom trying to get closer to her while she tried to keep some distance.
So, Tom settled for getting peeks at her nipples poking out of the water occasionally, while she caught fleeting glimpses of his crotch through the water.
“Had enough, I guess.” he explained, diving under the surface toward the ladder but really using it to get a look at her underwater.
Kate knew what he did but said nothing; instead, she watched him climb out of the water, particularly eyeing his manhood, clearly aroused by the moment.
“Coming out, Mom?” he asked, wrapping his towel around himself.
Kate understood the moment had come. She convinced herself there was no reason to hide her body from him. In fact, she was rather proud of it, and Tom got an eyeful as she climbed the ladder, her pendulous breasts swaying as she climbed. She dried off, wrapping herself in the towel as if there was nothing unusual about her exposing her body to him.
“Getting late. I’m turning in.” Kate said nervously before heading to the door.
In her room, she fell on her bed, her mind in a spin. She had just exposed herself to her son, and more, got a good look at his handsome package. She convinced herself it was just a fantasy as her fingers slipped between her thighs, surprised by how moist she was. Those fingers were soon working her clit as her mind focused on her naked son.
It didn’t take much before she arched her back, biting into a pillow to muffle her cry of ecstasy.
Saturday morning, the two shared breakfast, saying nothing about the night before, and very little in general. Kate had come face-to-face with the fact she found herself sexually attracted to her son. It both shocked her and aroused her. And it didn’t help seeing his erection as he climbed out of the pool, which left little doubt she was the cause.
“Back to the pool! Uh, mind if I swim nude again?” Tom asked.
“After your chores.” she replied calmly.
“Gonna join me?”
“Uh, no. Errands of my own today.” she said nervously.
As Kate left to do some shopping, Tom hurriedly did yard work, and by the time she returned, he was finishing up. He met her in the kitchen, shirtless and sweaty, announcing his chores were done. He grabbed a quick lunch while she tried to ignore the heady aroma of his sweaty body as he sat at the table, eating.
Finished, he headed to his room, returning wearing only a towel.
“Sure you don’t want to join me?” he reiterated.
“No Love, the pool is all yours.”
But after he stepped out the patio door, Kate’s curiosity got the better of her. Stepping to a window, she watched as he tossed the towel on a lounge chair then stepped to the edge of the pool. She took a deep breath as she drank in his nude form, a body that only heightened her sexual attraction. But after he dived in, she turned away, trying to discipline her feelings of temptation.
Still, she couldn’t shake the vision of his gorgeous body and convinced herself there was no harm with her sitting by the pool, enjoying the afternoon sun while he swam. She didn’t want to change into her bikini, so in just her shorts and T-shirt, she stepped out and settled in a lounge chair, a glass of scotch by her side, wanting to loosen up a bit, but for reasons she wouldn’t admit to herself.
After a few minutes of admiring him, Tom noticed she was there.
“Sure you don’t want to come in? Water’s great.”
“No. Hope you don’t mind me watching?” she replied.
Tom grinned mischievously before resuming his swim while his mother just watched, unable to deny the arousal it was causing. She finished her drink in one swallow then looked at him again. Nothing wrong with joining him, she thought to herself.
Standing, she stripped naked before stepping to the pool and diving in, but not before Tom got a good look at his mother’s lovely body.
“You’re right, the water is lovely.” Kate purred.
They swam a bit before Tom drew closer when Kate casually brought up her son’s love life.
“Haven’t dated any girls recently.” she commented.
“Lost contact after school ended, I guess.”
As he stood neck-deep in water, he turned the subject to her.
“You haven’t been on any dates lately?”
“Yeah. None of the men my age are worth mentioning. I imagine the good ones are all accounted for. Sometimes I think you spoiled me. None of them are as nice as you.” she smiled.
Tom drew even closer, their lips inches apart. His hormones were doing his thinking now, and he put his lips on hers, kissing her cautiously. But Kate didn’t resist; his lips seemed electric as a thrill overcame her. They pulled apart with Tom looking into her eyes for a signal.
“Tom, we...”
But she couldn’t finish her sentence, looking at those inviting lips. Instead, she put a hand around his neck, pulling him close and kissing him delicately. Tom, in turn, instinctively put his arms around her, pulling her closer until her ample breasts were pressing against him.
“Tom, I don’t want to be taking advantage of you. My god, you’re only sixteen!”
“You’re not!” he answered excitedly, kissing her more passionately this time.
Kate knew she could no longer resist and that there was no going back, wrapping her arms around him and responding equally to his kisses, followed by giving him some tongue, which only added to his excitement. As they continued kissing, Tom pulled them into shallower water as Kate felt his erection brushing against her body.
They pulled apart, with Tom getting a closeup look at her luscious breast for the first time.
“I know what you want.” Kate whispered, hefting a generous tit for him.
Excitedly, he leaned down, kissing her orb before sucking the nipple into his mouth while his mother sighed with delight. He licked and sucked, moving on to the other breast, completely absorbed by the fulfillment of a fantasy.
Kate soon pulled his lips back to hers, taking his stiff cock in hand for the first time.
“You have become quite a man.” she purred, fondling his handsome member.
Tom kissed her wildly, excited by feeling her stroking his manhood.
Kate herself was becoming consumed with passion. Foreplay be damned, she wanted to feel that beautiful cock in her mouth. She pushed her son to the pool ledge, encouraging him to hold on and float in the water, looking wide-eyed when his erection broached the surface. She moved between his legs and lovingly took hold of it, like some sacred object, her eyes admiring it.
“You are beautiful.” she purred, bringing her lips closer to his manhood.
“Oh Mom...!” Tom sighed when her tongue first touched his cock.
“Just enjoy, my Love.” she whispered before running her tongue down its length, giving his scrotum a flick of her tongue for good measure.
She ran her tongue up and down its length a few times, eliciting a rewarding gasp from him until slipping it past her soft lips. She started bobbing on it, savoring the feeling of his hard cock in her mouth for the first time. Kate expected a sixteen-year-old wouldn’t hold out long, so she stretched her lovemaking out, wanting to enjoy this first blowjob for as long as possible.
“Mom, I’m ... I’m...” Tom moaned, trying to warn her.
“It’s okay Love, let it go.” she whispered.
Kate could feel his cock start to throb, followed by the first of his load splashing in her mouth. As she cupped his sack, she swallowed his whole load, surprised by how much there was.
With his load spent, Tom looked at his mother, mouth agape and breathing hard after an incredible orgasm, watching her tenderly kiss his manhood.
“As you can see, your mother knows how to please a man.” she purred, eyeing him seductively.
Tom got on his feet, pulling Kate to him and kissing her lovingly, aware that he needed to reciprocate and that he needed to do it attentively. He slipped his hand between her thighs, and finding her entrance, slipped a finger into it.
“That’s it ... Easy though.” she whispered in encouragement.
Shortly, she gasped when his finger found her clit, asking him to go slowly. Kate kissed him lustily, plunging her tongue into his mouth, and despite her admonition to go slowly, was grinding on his finger, her temperature rising. For Tom, it was incredible to see his mom so aroused, a side of her he long wondered about.
It took some time, but Kate was on fire, holding his wrist, guiding his hand just the right way until, with a shudder, she wrapped her arms around him as her orgasm hit, gasping in overwhelming pleasure.
As the climax ebbed, Tom pulled his hand from her pussy, wrapping her in his arms while she held on to him, trying to recover.
Finally, she looked him lovingly in the eyes before giving him a tender kiss. Nothing needed to be said, with Kate reveling in this new intimacy with her son while Tom experienced the joy of pleasuring his mom.
Kate slipped a hand under the water, finding him hard again.
“Quite a man.” she grinned.
While fucking in a pool can be fun, Kate wanted this first time to be right. She led him out before lying on the grass.
“Now, make love to me.” she said huskily, spreading her legs.
Tom could hardly believe it was happening as he knelt between her legs. He leaned over her where Kate took hold of his manhood, guiding it to her vestibule. He drove it in as they looked into each other’s eyes, overcome by this beautiful, incestuous moment.
“Mom!” he muttered, planting his face in her neck.
“Yes! Make love to me. Just fuck Mommy.” Kate hissed, grabbing his ass.