The Obsession - Lucas's Secret (Prequel to The Permanent Diaper Girl)

The Obsession: Lucas’s Secret A Prequel to The Permanent Diaper Girl

Three Months Before the Contract

Lucas Hale stood in the doorway of his guest room, tablet in hand, measuring tape draped over his shoulder. The space was empty now—just bare walls and afternoon sunlight slanting across hardwood floors. But in his mind, he could already see it: the crib against the far wall, changing table under the window, shelves stocked with everything she would need.

Everything he needed her to need.

He’d been fantasizing about this for eight months. Ever since that night Emma had let something slip during sex—some offhand comment about a story she’d read, about diapers and surrender and giving up control. She’d laughed it off, flushed and embarrassed, but Lucas had seen the truth in her eyes.

The hunger.

The same hunger that had been eating at him since adolescence, the dark craving he’d learned to hide behind tailored suits and a calm demeanor. He’d dated women who wanted to be dominated in the bedroom, women who liked being tied up or spanked or called names. But none of them had understood the depth of what he really wanted.

Until Emma.

That casual mention—diapers and everything—had unlocked something feral in him. He’d lain awake that night, cock painfully hard, imagining her padded and helpless. Imagining her wet. Messy. Begging him to change her.

By morning, he’d started planning.

Week One: Research

Lucas approached it like a business project. Methodical. Thorough. He couldn’t afford mistakes—not with something this important.

He started with forums. ABDL communities where people shared stories, advice, and product recommendations. At first, he lurked, absorbing everything: which diapers had the best capacity, how to build a proper changing table, the psychology of age regression and dependency training.

The more he read, the harder it became to focus at work. Conference calls blurred into fantasies. While Emma sat across from him at dinner, chatting about her marketing campaigns, he imagined her in a high chair, formula dripping down her chin.

He started a private document on his encrypted cloud drive: Project Baby Girl. It grew rapidly—supplier lists, training schedules, contract language. He divided it into phases:

Phase 1: Environment preparation (nursery build-out, equipment acquisition) Phase 2: Psychological preparation (testing her boundaries, gauging her readiness) Phase 3: The proposal (contract presentation, negotiation) Phase 4: Implementation (Day One through Week Four) Phase 5: Permanence (if she chooses to stay)

The “if” felt like a formality. Deep down, Lucas knew. Once he had her in diapers, once she felt what it was like to surrender completely, she wouldn’t want to go back.

She couldn’t.

Week Three: Shopping

The packages started arriving.

Lucas timed them carefully—deliveries scheduled when Emma was at the office, boxes immediately hidden in the locked guest room. She noticed once, asked casually what he was ordering.

“Storage solutions,” he’d said smoothly. “Organizing my files.”

She’d kissed his cheek and gone back to her laptop.

Inside those boxes: his future.

Medical-grade adult diapers in bulk—500 count. Overnight boosters. Plastic pants in every size, some with locking mechanisms he’d had custom-made. Baby powder by the gallon. Wipes. Lotions. Creams for rash prevention.

Bottles—six large ones with adult-sized nipples. Pacifiers in a dozen colors. Sippy cups for transitional phases.

Furniture arrived in pieces: an oversized crib with reinforced rails, rated for adult weight. A commercial-grade changing table, padded surface washable and waterproof. A high chair that locked. A playpen large enough for her to sit comfortably.

And the training supplies.

Plugs in graduated sizes. Inflatable models for advanced stretching. Vibrating versions for conditioning. Lube—medical-grade, copious amounts. Restraints that looked soft but held firm. A collection of suppositories and enemas for scheduled cleanouts.

He stored everything in labeled bins: Phase 1 - Diapers, Phase 2 - Feeding, Phase 3 - Training, Phase 4 - Discipline.

Every night, after Emma fell asleep, Lucas would slip into the guest room and unpack one bin. He’d arrange items on the changing table, imagining the first time he’d use them. His cock strained against his pajama pants as he practiced the motions—unfolding a diaper, applying powder, imagining her legs spread wide and compliant.

He’d stroke himself slowly, methodically, while staring at the supplies.

This will be inside her. This will catch her accidents. This will train her to need me.

He always came hard, spilling into his hand, careful not to make a sound that might wake her in the next room.

Week Six: The Nursery

The build-out took two weekends. He told Emma he was renovating the guest room for “a project”—not technically a lie. She’d offered to help; he’d deflected, saying he wanted it to be a surprise.

“For your birthday,” he’d murmured, kissing her neck until she forgot to ask more questions.

He painted the walls himself—soft gray, calming and neutral. White crown molding for a touch of elegance. He installed blackout curtains so she could nap at any hour. A sound machine for white noise. Soft lighting with dimmer switches.

The crib went up first. He assembled it alone, testing the rails, making sure the locking mechanism was smooth but secure. The mattress was firm but comfortable, fitted with waterproof covers beneath soft pastel sheets.

He stood back and stared at it for twenty minutes, cock thickening in his jeans.

She’ll sleep here. Trapped. Safe. Mine.

The changing table came next—positioned under the window for natural light during daytime changes. He filled the shelves methodically: diapers stacked by thickness, wipes in warming dispensers, powders and creams in easy reach. He installed stirrups on retractable arms, testing the angles, imagining her legs spread wide while he worked.

The playpen went in the corner—padded mat inside, soft toys he’d carefully selected. Nothing infantile or insulting; instead, tactile items designed for stress relief and focus. Coloring books with intricate designs. Soft blankets. A few carefully chosen stuffed animals—quality ones, not cheap.

He added the rocking chair last. Wide, sturdy, with armrests at the perfect height for holding her while she nursed from a bottle.

Or from him, if he decided to pursue that fantasy.

He’d already ordered the supplements—herbal blends that could induce lactation in men with the right hormonal cocktail. It would take months of consistent use, but Lucas was patient. He wanted to give her everything.

Including milk from Daddy’s chest.

Week Nine: Testing the Waters

He started subtle.

During sex, he’d pin her wrists above her head and whisper, “Such a good girl for me.” Watched her pupils dilate at the praise.

He bought her a fluffy bathrobe and insisted on toweling her off after showers—slow, thorough, treating her like something precious and fragile. She’d laughed at first, then melted into it.

He started making her breakfast—cutting her fruit into small pieces, bringing her coffee in a large mug she had to hold with both hands. Subtle infantilization, testing her response.

She loved it.

One night, after particularly intense sex, he held her close and murmured, “What if you didn’t have to be in charge of anything? What if Daddy took care of everything?”

She’d gone very still in his arms.

“Daddy?” she’d whispered.

He’d kissed her temple. “If you wanted.”

She hadn’t said no.

That night, Lucas barely slept. He lay beside her, listening to her breathing, cock hard and leaking, imagining the moment he’d finally present the contract. The moment she’d sign her name and become his.

Permanently.

Week Twelve: The Contract

He spent three days drafting it. Legal language mixed with tender clauses. Boundaries clearly defined. Safe word mandatory. But underneath the careful wording, the truth:

I’m going to own you. Completely.

He printed it on heavy paper, elegant and official. Thirty days. Full regression. If she hated it, they’d stop and never speak of it again.

But if she loved it…

He didn’t write the “permanence” clause in the initial contract. That would come later, after she was too deep to climb out. After her body had forgotten how to hold it. After she needed the diaper more than air.

He placed the contract on the kitchen counter the night before. Woke early to brew coffee. Waited.

When Emma emerged in his T-shirt, sleepy and soft, he felt a surge of possessive heat so strong it nearly buckled his knees.

Soon.

The Night Before Day One

Emma signed.

Lucas kept his expression calm, controlled, even as his pulse roared in his ears. He folded the contract, tucked it into a drawer, and took her hand.

“Come with me.”

He led her to the nursery door. Paused with his hand on the knob.

“This is everything I’ve been building for you,” he said quietly. “Everything I need you to be.”

He opened the door.

Emma’s breath caught. He watched her take it in—the crib, the changing table, the shelves of diapers. The careful, obsessive preparation.

“Lucas…” Her voice was barely a whisper. “How long have you been planning this?”

He stepped behind her, hands on her hips, lips at her ear.

“Since the night you told me about the story. Every day since then, I’ve thought about this. About putting you in that crib. Strapping you to that table. Making you mine in every way.”

He felt her tremble.

“Tomorrow,” he murmured, “I’m going to strip you naked, shave you smooth, and put you in your first diaper. You’re going to wear it all day. You’re going to use it. And I’m going to take care of every single accident.”

His hand slid to the front of her sleep shorts, pressing firmly.

“You’re wet already, baby girl. You want this as much as I do.”

She nodded, unable to speak.

Lucas turned her around, cupped her face.

“Tomorrow, everything changes. Tonight, I’m going to fuck you one last time as an adult. Because tomorrow, you become Daddy’s little girl. Permanently.”

He carried her to their bed and made love to her slowly, thoroughly, claiming every inch. When she came, crying his name, he whispered the truth against her skin:

“You’re already mine. You just don’t know it yet.”

That night, while Emma slept, Lucas returned to the nursery one final time. He stood at the changing table, running his hands over the diapers, the powder, the plugs. Tomorrow, it would all be real. Tomorrow, she would lie here, legs spread, while he prepared her for a life of complete dependency.

His cock was iron-hard. He unzipped his jeans and stroked slowly, deliberately, staring at the crib.

Tomorrow, she’ll sleep there. Tomorrow, she’ll wet herself and call for me. Tomorrow, I’ll change her like the baby she’s becoming.

He came with a strangled groan, spilling over his fist, eyes locked on the empty crib.

By tomorrow night, it wouldn’t be empty anymore.

And Emma Thompson would belong to him.

Completely.