The Peanut Butter Babysitter - Cover

The Peanut Butter Babysitter

Copyright© 2004 by MarkStory

Chapter 16

Romantic Sex Story: Chapter 16 - Jim and Aimee have a chance meeting over a jar of peanut butter. In the beginning, he's a married father, she's a college student. That chance meeting in a grocery store, and the coincidence that follows, will change their lives (and others' lives)! I brought this story back to life in late 2025, more than 20 years after I first started writing it.

Caution: This Romantic Sex Story contains strong sexual content, including Ma/Fa   Fa/Fa   Consensual   Romantic   Lesbian   Heterosexual   Fiction   Cheating   Polygamy/Polyamory   Masturbation   Oral Sex   Babysitter   Slow  

I slid into bed a little earlier than usual, stretching out into the cool sheets. The room felt bigger than it used to. Or maybe I was just more aware of the empty space in the middle of the bed--the space Aimee had filled for a week without even trying.

Beth came in a minute later, hair twisted up, rubbing lotion into her hands. She shut off the lamp on her side and slipped under the covers with a sigh.

“Feels different with her down the hall,” I said softly.

Beth let out a breath that was almost a laugh. “God, yes. I keep listening for her. Which is ... pathetic.”

“It’s not.”

We both stared at the doorway for a moment, as if she might appear anyway. Once you get used to someone’s shape in your life, their absence is louder than their presence.

“The beach changed things,” I said.

Beth rolled onto her side, propping her head on her hand. “Yeah. I didn’t think it would feel that natural. Or that good.”

I nodded. “I already miss it.” It was a confession I didn’t realize I’d been holding.

“Me too.” She nudged her foot against mine. “The room felt ... full. In the best way.”

We let the silence stretch. Not the awkward kind--just the sort where everything’s finally being named.

“I keep wondering why she isn’t in here more,” I said. “You know she wants to be.”

“She does,” Beth murmured. “But she thinks she’s intruding. On us. On the marriage part.”

“She’s not.”

“No. But she’s trying to be respectful.” Beth sighed. “I hate that she thinks she needs permission to belong, or that we only want her in here for sex.”

I reached over and brushed a stray hair from her cheek. “Maybe she’s waiting for us to say those things out loud.”

“Maybe we should,” Beth said. There was a vulnerability in her voice that I rarely heard--like admitting it made her braver and more uncertain at the same time.

We fell quiet again, and I traced the line of her arm with my thumb. Eventually, I cleared my throat. “We need to figure out what we say to people.”

Beth gave a rasp of agreement. “Right. No lying. No pretending she’s just a roommate.” She shifted closer, eyes narrowed in thought. “We can keep it simple. ‘She lives with us.’ ‘She’s part of the family.’ That feels fair.”

“And if someone pushes?” I asked.

Beth smirked. “We’ll handle it. Case by case.” Then, lower: “I don’t want to hide her. I don’t want to minimize what she is to us.”

“Me neither.”

There was a beat, and then I made the mistake of testing the joke we’d dangled earlier. “If someone asks whether we’re in love with her...”

Beth groaned into her pillow. “I’ll just say, ‘define love,’ and sprint into traffic.”

I chuckled. “Please don’t.”

“Fine.” She turned her face toward me, eyes glinting. “I’ll panic silently and let you handle it.”

“That’s somehow worse.”

She laughed, and the edge we’d been circling softened. The room felt lighter for a moment, even with the heaviness of what we were both admitting.

When it faded, Beth’s voice went quiet again. “I want her here more nights than not. Every night if we can.” She traced an absent line over the sheet between us. “Is that crazy?”

“No,” I said immediately. “It’s honest.”

She exhaled, long and tired. “Let’s talk to her tomorrow. Let her know she’s wanted. Really wanted. Not as some ... accessory to us. As part of this.”

I pulled her against me, hand splayed over her waist, and pressed a kiss to the back of her shoulder. She relaxed into me, but the room still felt too open, like we were missing one steady breath to make it whole.


Beth found Aimee in the kitchen on Saturday afternoon, standing over a cutting board with a half-sliced apple and that little crease between her brows that meant she was thinking too hard. The house was calm -- the boys down for quiet time, Jim outside washing the car. It was as private a moment as they ever got.

“Got a minute?” Beth asked.

Aimee looked up immediately, softening. “Yeah. Of course.”

Beth motioned toward the back deck, and they stepped outside into the shade. The air smelled faintly of cut grass and the sunscreen the boys insisted on smearing on themselves even when they weren’t going anywhere.

Aimee perched on the glider, tucking one leg under herself. Beth stayed standing for a moment, gathering her thoughts -- not because she didn’t know what she wanted to say, but because she wanted to say it in a way that didn’t spook the girl who was somehow still learning she belonged.

“Jim and I talked this week,” Beth began.

Aimee’s eyes widened just enough to show she noticed the seriousness in Beth’s voice. Not fear -- more like bracing.

“It’s all good things,” Beth said quickly, taking the seat beside her. “The Cape ... opened something for us. For all three of us.”

Aimee exhaled, relieved but still uncertain. “Okay.”

Beth reached out and covered Aimee’s hand. “First. You don’t have to wait for a specific invitation to be in our bed.”

Aimee froze like Beth had hit pause on her mid-breath.

Beth went on, slow and gentle. “You never did, honestly. But now? It’s open. Every night. Any night. If you want to be with us ... for sleeping or talking or ... anything ... come in. You’re not intruding.”

Aimee’s throat worked as she swallowed. “I just ... I didn’t want to overstep.”

“You’re part of this,” Beth said, squeezing her fingers. “You’re not a guest in our room. You belong there.”

Aimee blinked fast, like the words hit exactly where she’d been afraid to look. She stared down at their hands, her voice barely above a whisper. “I want to. I always want to.”

Beth felt something unclench in her chest -- the quiet kind of joy, the sort you only get when someone finally understands what you’ve been trying to show them.

They sat with that for a beat, the glider moving slightly.

“Now,” Beth said, shifting them to the other piece, “we should talk about the outside world.”

Aimee gave a small, rueful laugh. “Yeah. That part.”

“We’re not lying,” Beth said. “Not about you. Not about what you are to us.”

Aimee nodded slowly. “I agree.”

“But,” Beth continued, “we also don’t owe anyone a dissertation. If someone asks who you are, we keep it simple. ‘She lives with us.’ ‘She’s part of the family.’ That’s it.”

“And if someone pushes?” Aimee asked, but it wasn’t fearful -- just curious, like she was mentally mapping the edges.

“We handle it case by case. Honestly, but not with any more detail than someone deserves,” Beth said. “We’re not going to minimize you. But we’re not giving the PTA your entire emotional biography either.”

Aimee snorted. “Thanks.”

Beth smiled. “We’re all figuring this out together. That’s the point.”

The back door creaked then, and Jim stepped onto the deck, wiping his hands on a dish towel. He paused when he saw them sitting close.

“Should I come back out in five minutes?” he asked, half-teasing, half-aware.

“No,” Beth said. She patted the seat beside Aimee. “Good timing.”

Jim sat, the glider dipping under his weight. Aimee leaned slightly toward him without meaning to -- a gravitational pull she no longer tried to hide.

“I told her,” Beth said, “that she doesn’t need a special invitation to be in our bed.”

Aimee glanced up at him, shy and bright and a little stunned. Jim’s expression softened instantly.

“Good,” he said. “Because we miss you when you’re not there.”

Aimee’s breath caught, and Beth felt her reach for both their hands at once -- instinct, not performance.

Jim added, gentle but sure, “We want you with us. All the time if you want.”

The porch was quiet except for the cicadas and the faint hum from the neighbor’s AC unit.

Aimee let out a tiny, shaky laugh. “Okay. Then ... I will. I want to.”

Beth leaned in, resting her head briefly on Aimee’s shoulder, letting the moment settle in around all three of them.

They weren’t in the Cape house anymore, but the shape they’d found there had followed them home. And it was already starting to feel permanent.


A couple of weeks later, Aimee’s parents arrived on a Friday afternoon, pulling into the driveway with the cautious enthusiasm of people who wanted to be warm but weren’t entirely sure what temperature the room allowed. Aimee greeted them with a tight hug that softened only after a few seconds, as if she had to remind herself they were actually here.

They spent that first evening together alone--Aimee had planned it that way--taking them to a small restaurant near campus, then showing them her classrooms, the quad, the coffee shop where she studied. She returned home late, smelling faintly of cold air and her mother’s perfume, tired but relieved the day hadn’t gone badly.

The next night was the Robinsons’ turn.

Beth spent half the afternoon cooking: roasted chicken thighs, lemony potatoes, a big salad Aimee insisted on assembling herself, and a blueberry crisp because she knew it was “a Maine thing” and wanted to offer something familiar. Jim set the table, letting the boys fold napkins in lopsided triangles that needed to be quietly refolded after.

Aimee’s parents arrived right on time--polite knock, polite smiles. Her mother carried a tin of cookies; her father handed over a bottle of wine with a slightly stiff “thank you for having us.”

Beth felt the tension immediately. Not hostility. Not suspicion exactly. Just ... a cautious sweep of the room, of her, of Jim, of the kids clinging affectionately to Aimee’s legs.

Dinner went smoothly. Conversation stayed light--coursework, the boys’ antics at the beach, updates from Maine. Aimee’s dad asked a few practical questions about how things worked day to day, and Beth answered them easily: who handled school drop-offs, who made dinner, how Aimee fit her classes around the boys’ schedules, the rhythm the house had settled into.

Nothing was hidden. Nothing was spelled out.

Her mother listened closely, eyes flicking between Beth and Aimee now and then, as if weighing not the answers themselves but the ease with which they were given. She nodded along, thoughtful, filing things away without comment.

But it was the boys who shifted the tone. Ethan insisting on performing the “big boy dance” he’d invented at the beach. Jake climbing straight into Aimee’s lap and refusing to move, even when offered dessert elsewhere. Their parents watched that--how natural it all was--with something softer than suspicion. Something like relief, maybe.

When the evening wound down, they thanked them again for “everything you’ve done for her,” in that careful way parents use when they’re not fully sure what to believe but can’t deny the evidence of stability right in front of them. Aimee walked them to their car, hugging them both tightly before they pulled out.

And then the house went still.

Later that night, when they all slipped into bed--Aimee settling between them as naturally as she breathed--Beth registered, not for the first time, how quickly this had become the norm. Most nights lately, Aimee ended up here, either climbing in early after brushing her teeth or sneaking in after Beth and Jim were half-asleep. Her old room had become more of a closet, less of a bedroom.

The three of them lay under the same comforter now, the fan humming overhead.

Aimee was quiet at first, staring up at the ceiling. Beth knew that look--the weight of thoughts she wasn’t sure how to drop into the room.

“What’re you thinking?” Jim asked, brushing his thumb over her hand.

Aimee sighed, long and tired. “I think my parents ... kind of know something’s up. Not the truth, obviously. They’d never guess that.” She gave a humorless little laugh. “They’d never suspect the real answer--that we’re all three in love. But I think they might wonder if something inappropriate is going on. Like you two are ... I don’t know. Taking advantage of me.”

Beth felt that land like a stone dropped into still water.

She shifted closer, tucking a strand of hair behind Aimee’s ear. “You’re not someone anyone could take advantage of, sweet girl.”

Aimee’s eyes flicked toward her with a faint crease. “They don’t always realize that.” She paused, then added more quietly, “I kept waiting for them to ask more. Hard questions. And they didn’t. Not really.”

Jim moved his hand to Aimee’s shoulder. “They saw a stable house. Happy kids. A daughter who’s doing well. That matters more than whatever question marks they left with.”

“But question marks still make me nervous,” Aimee admitted. Her voice had gone small--not frightened, just fragile. “I don’t want them thinking poorly of either of you.”

Beth felt a swell of tenderness, then anger on their behalf, then tenderness again. She stroked Aimee’s cheek with her thumb. “Let me say this as plainly as I can: nothing about this is wrong. Nothing about your being with us is something to hide in shame. If they’re unsure what to make of it, that’s their puzzle, not yours.”

Aimee let out a shuddery breath. “I know. I just ... care what they think.”

“Of course you do,” Beth murmured. “But they saw you’re safe. Loved. That’s the core of it.”

Aimee nodded slowly, melting a little between them like she finally let herself be held.

Beth leaned her forehead against Aimee’s temple. “And as for the rest? We’ll keep doing what we’re doing. Simple truths. No lies, no explanations. They’ll come around in their own time.”

Aimee reached for both of their hands then, one in each of hers, like she needed to feel the connection physically to believe it.

“Okay,” she whispered. “I trust you.”

Jim pressed a kiss to her shoulder. Beth felt her chest loosen, the way it always did when Aimee let herself lean fully into them.

Outside, a car passed on the street. The house creaked. The boys murmured in their sleep across the hall.

Inside the bedroom, the world shrank down to three people and the shared certainty that whatever others suspected--whatever shadows or guesses or awkward pauses waited in the future--this was real.


The park was already loud when we arrived--shrieks from the playground, the thump of a soccer ball being kicked too hard, a toddler wailing somewhere off to the left in that universal “I dropped my snack” pitch. I carried the cupcakes; Beth held the gift bags; Aimee walked between us with Jake on her hip like she’d been born with him glued there.

Parents filtered in slowly, the usual mix of small talk and half-distracted greetings. I helped Ethan and Jake set up the picnic table while Aimee drifted toward the knot of kids gathering near the slide.

And instantly--instantly--she had them eating out of her hand.

Within minutes she was pushing a train of three kids on the swings, narrating the whole experience with dramatic gasps and terrible sound effects. Ethan abandoned me and the gift bags entirely, sprinting toward her with his usual “Aimeeeee!” battle cry. Jake followed, shrieking in delight, his little legs pumping twice as fast as his body could handle.

She caught them both without breaking stride.

I stood there watching, trying not to smile too broadly. It struck me every time--how naturally she fit into any group of children, like she was tuned to their frequency, picking up their excitement, their fears, their need for attention, all without effort.

Beth sidled up beside me. “Every time I think she can’t be more of a natural...”

“I know,” I said quietly.

A few of the other moms noticed too. One--Megan, I thought--wandered over.

“Your ... family friend? She’s great with kids,” she said, nodding toward Aimee, who was crouched in the mulch helping Ethan tie his sneaker.

“She lives with us,” I said. The line slid out with an ease I’d practiced in my head. “She’s part of the family.”

“Oh! That’s wonderful,” Megan said, smiling. “She seems really sweet.”

“She is,” Beth added. “The boys adore her.”

Another mom overheard and joined in, the way moms tend to do when the scent of harmless gossip is in the air. “So is she in college? I think Ethan mentioned that once.”

“Yes,” Beth said smoothly. “Senior year.”

“Oh, good for her. Must be nice for you guys to have the help.”

“We’re very lucky,” I said, keeping my tone warm and noncommittal.

No one pressed further. They weren’t here to solve mysteries; they were corralling five-year-olds hopped up on juice boxes. But I could feel the gentle antennae at work--nothing sharp, just curiosity. It was the mothers more than the fathers; the dads clustered around the cooler talking football, glancing over only when a kid cried.

Later, during cupcakes at the picnic table, Aimee ended up between Ethan and one of his classmates. Ethan leaned into her side the whole time, chocolate frosting smeared across his cheek and the sleeve of her shirt. Jake climbed into her lap halfway through the singing, uninvited but instantly accommodated. She balanced him effortlessly while helping Ethan unwrap a small Lego set from one of his friends.

Parents noticed that too--the way the boys treated her as a safe default, not a novelty.

But no one said anything pointed. Not yet.

After the crowd thinned and the last sugar-high child was dragged to a minivan, Beth and I packed up the remains while Aimee sat in the grass, Jake dozing against her shoulder, Ethan resting his head on her knee.

I walked over, taking in the scene: the warm shade, the quiet hum of cicadas, Aimee brushing a curl off Jake’s forehead with a tenderness you can’t fake.

“You good?” I asked her.

She looked up, smiling. “Yeah. Just tired in that good way.”

“Parents liked you,” Beth said as she joined us. “Lots of questions.”

Aimee winced. “Bad questions?”

“No,” I said. “Just curious ones. The easy ones.”

She relaxed a little. “Good.”

I reached down and ruffled Ethan’s hair. “Your party was a hit, buddy.”

Ethan grinned without lifting his head. “Because Aimee was there.”

I watched her face at that--how she tried to swallow the emotion with a laugh. It didn’t quite work.

As we walked back to the cars, Aimee shifted closer to me without even seeming aware of it. Just a new instinct.

And I felt it again--that sense that the outside world didn’t yet have a name for what the three of us were building, but the boys already understood.

Whatever shape this family was becoming, it had already taken root. The rest of the world would catch up later. Or it wouldn’t, and that thought didn’t bother me like it used to.

 
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