Author's note: So this was a Tumblr prompt. (I'm not technically taking prompts, however, this is something I've wanted to write for a while. So I made an exception.) Just to warn you: This is menstral sex. I know it's a bit of a taboo, lots of people think it's gross, etc. If you're one of those people, feel free to skip this one. I wrote it knowing it's not a common thing. If you do choose to read, I hope you like it! A bit of domestic fluff added in too, post UW.

Disclaimer: Not mine.

That Time

Emma rolled over, blinking against the early morning light. Killian lay peacefully beside her, fringe falling adorably in his face. How many mornings had she woken up like this? For the first few months after returning from the Underworld she took to counting them, if only in her head. Part of her didn't want to miss a moment with him, not anymore. She'd spent so much time taking him for granted, then when she finally let him in, she lost him. Over and over and over.

So Emma did what she did best. She pushed back at the lord of the dead and reclaimed what was hers. She was done being fate's bitch. She was Emma Swan and she was taking back her happy ending.

The Underworld felt like a faint memory now. Indeed, there was never much time to wallow in past hurts when there was some other baddie around the corner. It seemed to be neverending in Storybrooke. Once again, she took a page from her parents' book and decided to make the most of the quiet moments she was given, with them, with Henry, with Killian. Especially with Killian. And he was all too happy to steal a few of those quiet moments too.

He was still a pirate after all.

She smiled down at him, no longer tired. She brushed away his fringe tenderly, rememorizing his face. She'd long since accepted he was one of the handsomest men she'd ever known—something she was careful not to mention in front of her father. David was fine with their relationship, but as always, there were things he didn't want to know. Like how they usually spent their time in the large fluffy bed.

His blue eyes were closed, beard thickened overnight. His jaw cast a shadow on his neck in the faint light and she had to ignore the flash in her gut. The blanket was twisted around his waist, leaving his chest bare. Killian hated wearing clothes to bed—when Emma encouraged whenever she could—but lines had to be drawn when Henry was in the house. She managed to convince him to wear some pirate themed pajama pants; she suspected it was because seeing him in them made her smile and kiss him senseless before bed. This morning, he lay on his right side, facing her, streaks of low sunlight crossing his chest.

Why did he have to be so freaking attractive?

Watching him as he slept...ugh, she was just adding to her frustration. Normally, she'd tease him awake, pressing warm kisses to his skin, tracing the happy trail down under the blanket. He'd grumble and growl, blindly reach for her. He never complained if she woke him like this, touching intimately. As he came into awareness, he'd murmur her name longingly, reach to guide her hand or her mouth. She loved seeing him like that, eager for her, no matter what.

Only today she couldn't have that because her little friend decided to visit. Not for lack of wanting. Emma seemed to be in the tiny percentage of women who actually were hornier during their time, which didn't used to bother her. She'd find one of her toys or take care of herself in the shower and she'd be fine. That was before she was married to freaking Captain Hook, hottest pirate on the seven seas. Now she was lucky if she got time to get herself off in the shower, between her family or the latest town crisis. No way was she asking Killian to help her with her problem; it was too embarrassing. Men simply didn't like that.

And fantasizing about her husband wasn't going to help.

Emma sighed in frustration and leaned over to brush a kiss to his brow. Maybe if she hurried, she could handle things in the shower before he woke up.

Killian felt the bed dip as she left; he waited until she was in the bathroom before opening his eyes. Something was wrong with his Swan. He could tell. She'd been out of sorts for a couple of days. He wasn't a fool, had been with her long enough to understand intricacies of her body. Not to mention he'd been in a relationship with a woman for nearly a decade. After doing some sums in his head, he was fairly certain he knew her cycle. It was one of the things a man learned after being with a woman long enough. The sane ones anyway.

Not that Emma was like that. It took him longer than he'd expected to figure it out. She didn't have mood swings or cramps or headaches or anything of the sort. In fact, the only way he'd sussed it out was a five to six day pause in their sex life, every four weeks or so. Even then he'd catch her looking at him. But before he could ask her what was wrong, she'd blush and change the subject. What was going on in that head of hers?

Her shower took a long time, longer than normal. He'd showered before bed the night before so he reluctantly got up and dressed. Hoping to make her feel better, he headed downstairs to make her favorite waffles and coffee. Over the course of the last few months, they'd made the kitchen hook friendly, which meant he could do little things like this for her without help. Still, Henry made his way there, called by the smells of breakfast. Killian greeted him warmly, handing him a plate of freshly made waffles.

"Look who's cooking up a storm," Emma said, hands on her hips.

"Morning, love," Killian replied. "Breakfast will be ready in just a tic."

"The waffles are great, Mom," Henry said around a mouthful of them.

"Talking with your mouth full again," Emma admonished. Still, she smiled at her kid. Henry was as tall as she was now, getting ready to start high school. He was a growing teenage boy; she was fighting a losing battle.

"Sorry."

Emma grinned at him and ruffled his hair as she stepped past him to get to the coffee. She poured herself a cup and leaned against the counter. "What's the occasion?"

Killian shrugged. "Does there have to be an occasion?"

"Well..no, I guess not." She stepped up to him and kissed his slightly scruffy cheek. Since she'd been in the bathroom, he hadn't shaved yet, which did things to her. Down, girl. "Thank you."

"You're welcome." He gently pulled her back and kissed her full on the mouth while Henry made little gagging sounds behind them, which made them both laugh.

"If I wanted PDA, I'd stay at my mom's house," he complained halfheartedly.

"That is not information I need to hear, lad," Killian replied with a laugh.

"Ditto," Emma added. "Any plans for the day?" She was mainly asking Henry, since Killian rarely left her side. Unless it was for a mission or for a boys' night at the Rabbit Hole.

"I'm headed to Gepetto's later," Henry said. "August said he'd look through my drafts." Henry was taking this Author thing seriously, carefully recording the goings on of their magical town.

"Don't stay too late. Your grandparents expect us for dinner at seven."

"I won't." Henry hopped off his chair and put his plate in the sink. "See you later, Mom. Killian." He waved at both of them before grabbing his backpack and heading out.

"That was quick," Emma observed.

"I suspect your friend isn't Henry's only visit today," Killian said, handing her a plate of steaming waffles. He got one for himself and sat with her at their little table. "Hence the haste."

"Who else could he be seeing?"

"Love, you're his mother. He's not exactly going to confide in you."

"A girl?" Emma asked suspiciously.

"Perhaps. It's only a feeling, really. I've seen him in the library a few times, talking to a lass around his age. He's not spoken to me, if that's what's worrying you."

Emma opened her mouth, then closed it again. "No, it's fine. I'm sure it's fine." Henry's last foray into romance wasn't something ever spoken of in their home. Violet was safely back home in Camelot now.

Killian smiled indulgently. Her love for Henry was one of the things he loved best about her. "You know...with Henry gone for the day, it leaves the house to us. Alone."

She looked at him sternly. "Yeah and we have that shed to clean out."

His face fell, but he agreed, digging into his waffles. After eating, they cleaned up, Killian washing, Emma drying. They worked in companionable silence, occasionally nudging each other in the hip. It was simple things like that Emma loved best. Surely, she could enjoy a few peaceful days with her pirate. It wasn't like she wanted to jump his bones or anything.

Killian followed her dutifully out to the shed; it seemed like another lifetime when it had been filled with dreamcatchers. Now it was storage, some of Emma and Henry's things from the loft, some of his from the Jolly. Yard equipment and other miscellaneous items littered the walls. In the six months they'd lived there as a family, they had acquired some useless junk. They spent much of the morning sifting through it, putting things in boxes to be donated or sold at something Emma called a "yard sale." She seemed oddly excited about it, so he didn't tease her about it.

Emma caught herself watching him carry things far too many times as they worked. Every time he slung a bag over his shoulder or a carried a box full of old rusty tools (where had those even come from?) out to the garbage, she had to bite her lip and look away. She thought the hard work would distract her from her libido but she was just kidding herself. Killian had long since stripped off his leather jacket and waistcoat, moving around in the tight button down shirt with the sleeves rolled up. He looked good enough to eat, even with some dust in his dark hair.

"Careful!" Killian cried, pulling her back from a teetering stack of boxes. A peak inside told him they were filled with some of Henry's old comic books. He shoved them back more securely against the wooden wall of the shed.

Emma let out an oomph of surprise but quickly regained her balance. "Thanks."

He kissed her cheek. "Anytime, love."

"We really should get Henry to look through those," she observed, noting his arms still around her. The metal of his hook rubbed the button of her jeans. "Before the termites get them."

"Termites?"

"You know? Little insects that eat wood?"

Killian grinned. "Aye, I know what those are. Captain of a wooden ship, remember?"

"Then why'd you ask?!"

"Because I like hearing you explain things."

She elbowed him, stepped out of his arms with an annoyed growl. "Jerk," she mumbled. But the insult held no sting.

"Oh, come on, Swan," he whined, following her. "I didn't mean anything by it. You just have a...unique perspective."

She whirled around, one brow raised. "A 'unique perspective'?"

He tried giving her his most charming grin. "Aye, one I will enjoy for the rest of our days."

She couldn't resist that smile. It made her weak in the knees. "Fine. Can we get back to work?"

"Are you sure there isn't something else bothering you, Swan?"

"Why would there be something bothering me?"

He scratched behind his ear, hoping what he said next wouldn't vex her. "Well, lass, I know this is your time and..."

Emma's blood ran cold. "You know?"

He shuffled his feet; if she wasn't mildly panicked, she'd find it adorable. "Well, yes. We have lived together for some time, Swan. It wasn't difficult to figure. Although, while I'm glad it doesn't cause you the typical symptoms, you are a tad irritable."

Emma shook her head, trying to process this. Captain Hook, the man who spent a month trying to figure out how to use the popcorn popper, knew she was on her period? Just by doing the math? Then her head snapped up. "What do you mean, a tad irritable?!"

"Well, a bit like that. No need to yell, Swan. I'm right here."

"And the typical symptoms? How do you even know about this?"

He looked mildly affronted. "Emma, I was in a relationship for some time if you'll recall. It's a plague suffered by women since time immemorial."

Oh. Right. Emma was so used to her husband's adaptation to modern life that she sometimes forgot how old he was. And that he'd been in love before, just like her. "I'm sorry, Killian," she said sincerely. "I..forgot."

He carefully stepped into her space. "It's quite alright, lass. I didn't mean to embarrass you."

"You didn't." She didn't fight him when he tenderly cupped her chin and drew her lips to his. Her fingers wove into his hair as she deepened the kiss. His arms slipped around her waist, holding her in place. She let herself kiss him the way she wanted to, twisting her tongue with his. Kissing him was always an adventure, one she indulged in as often as possible. She felt that pull in her gut again and reluctantly pulled away. "We should get back to work."

"Things were just getting interesting."

She blushed. "You know we can't."

"Why not?"

"Because! Because..." She looked around the room, hoping for some inspiration.

"Is that why you're so jumpy? Why you stare at me when you think I'm not looking? Do you want me, Swan?"

She bit her lip, eyes wide as saucers. Then she pushed past him and dashed into the house, face red. He cursed and hurried after her, afraid he'd unduly upset her. When he got to their room, the bathroom door was firmly shut and locked. He knocked. "Swan? Emma? I'm sorry, love. I didn't mean to bollox everything up. Please open the door?"

"Go away!"

"As you wish." He didn't go far, just over to sit on their bed. He hadn't truly expected to hit a nerve; he'd only wanted to make her feel better.

Emma stood on the other side of the door, feeling like an idiot. Killian hadn't done anything wrong. She was just embarrassed. No one knew about her...thing. And admitting out loud that she wanted something that most people would consider gross threw her. She and Killian had gotten up to some kinky things; he never made her feel bad or made fun of her desires. He was always a very enthusiastic partner, just wanting to make her happy. After a long beat, she unlocked the door and opened it. "Killian?"

"Here, Swan."

She stepped out of the bathroom; he was sitting on their bed. She smiled sheepishly and walked over to him. "Sorry," she whispered. "I didn't mean to snap."

"I don't want you to feel like you have to hide from me, Emma. I want to know everything about you."

"You don't think it's weird? Or...gross? Most men think it's gross."

"You say that like blood is something to be afraid of."

"Well..."

He held up his hook. "Pirate."

She huffed. "Right." She cupped his face in her hands. "I don't expect anything. Really, I'm fine."

His hand and hook settled on her waist. "But would it make you happy?"

"I'm happy right now."

His fingers slipped under her shirt. "Happier?"

She wet her lips as he deftly stroked her skin. Already she could feel the desire thrumming under her skin. "Killian..."

"Just answer me this, love. Do you want me?"

She gazed down into his blue eyes; they were shining with love for her. And a hint of mischief, the kind he got when he wanted her. "Yes," she whispered. "I want you, Killian."

"Good." He coaxed her mouth to his and gave her a long slow kiss. She whimpered, his hand sliding deeper under her shirt. His hook looped through her belt loop and tugged her closer. "Think you could handle another shower?"

"Hmm, that sounds amazing." They were a bit dusty and dirty anyway. Killian kept his hook in her pants as he stood and guided her to the bathroom. Once there, he turned on the shower, then backed Emma into the opposite wall. He pounced, kissing her hard on the mouth. "Oh god."

"Have you always been like this?" he asked, reaching for the hem of her top.

She nodded as he pulled it over her head. "Yeah. But I've never..."

"You never asked," he finished for her.

"Nope." His hook toyed with the strap of her bra, his mouth on hers again. They made out like randy teenagers, fingers moving over buttons and hooks. His touch was like a brand on her skin, exactly what she'd been craving. His shirt joined her top on the floor, her jeans got pushed over her hips. Killian ducked to the floor to unzip her boots and pull them free, his mouth teasing the skin of her flat belly. She wove her fingers into his hair as he teased her, heat building in her core. "Fuck."

"So lovely, my Swan," he murmured, peeling the jeans from her legs. He worried a mark into her hip and she sucked in a deep breath.

"Killian..."

"Hmm?"

"Get up here." He smirked as he did what she asked; she grabbed him by the neck and kissed him fiercely. She unbuckled his belt and yanked it free, palming his growing erection through his pants. "Are you sure about this?"

He thrust lightly into her touch. "Doesn't it feel like I'm sure?"

"I dunno. Maybe we should check." She reached inside, jerking her hand along his shaft. "Mmmm."

"My greedy lass." He palmed a breast, bending down to suck on its twin. He moaned against her as she continued to stroke him, bringing him to full hardness. He was warm and thick in her hand, velvety smooth. She loved the way he fit inside her.

"Shower," she panted, head falling against the tile.

"Aye." He toed off his boots and kicked his pants away. After hastily removing his brace and socks, he pulled open the door and stepped under the hot spray. Emma took advantage of her private moment to tug out her tampon and trash it before following him into the stall. They'd had shower sex a dozen times, but this felt different. He pulled her to him, kissing her passionately while maneuvering her under the spray. She was doused completely, the hot water heaven on her skin. "Now let me touch you," he whispered.

Emma shivered as he reached for the body wash, squirting a generous amount on her wet skin. She leaned against the wall of the shower as he lathered her skin, starting at her shoulders and working his way down. He paid special attention to her breasts, sending licks of fire to her core. She clenched those inner muscles, her need building. "God, please..."

"Soon, my love." His hand moved over her stomach, her hips, her ass. He gave her a fond squeeze before kneeling to soap her long legs. For only having one hand, it felt like he was everywhere at once, making her further insane with lust. Her whimpers and moans filled the room, even over the shower.

"I'll make it all better, Swan," he promised, rising again. "All better." He pulled her back under the spray, washing her clean of the dirt from the shed. Then he spun her around so his cock was nestled in her ass. "Bend over, one foot on the ledge."

Emma was too mindless in her need to argue; she obeyed, hands flat against the tile, left leg up on the ledge. She felt his fingers between her legs, testing her readiness, which seemed superfluous to her. She was so turned on she was shaking. Then she felt him, just the very tip of him, sliding through her slit. "God, stop teasing! Fuck me! Please!"

Killian chuckled against her back. "As you wish." Then he thrust forward, taking her in one smooth motion. They both groaned loudly; she was hot and slick, taking him all the way to the hilt. "Fuck, Emma."

"Move!" she cried, rocking back into him. He sank even deeper, making her moan, then he was moving. His bad arm wrapped around her waist, holding her steady as he drove into her. He could tell she didn't want slow or reverent or gentle, not with the way she rocked back against him. She gave as good as she got, reveling in the way he stretched her. They fit perfectly and this was so much better than her lonely shower earlier that morning.

"So good," Killian panted into her ear. "You feel so fucking good, Swan. Is this what you need?" He punctuated his question with a harsh thrust of his hips, making her mewl in pleasure.

"Yes!" she cried. "Don't stop! Don't fucking stop!"

"You should have just told me," he growled. "I always want to be inside this tight body. Fuck."

"Ahhhhh," Emma moaned, fingers slipping on the wet tile. She adjusted her foot, changing the angle of his deep hard thrusts. "Oh shit! There! Right fucking there, Killian!"

He heeded her as best he could; she was shaking in his arms, so close to her orgasm. "Come for me, Swan. Let go."

She nodded hard, the orgasm slamming into her. She screamed, the sound echoing in the stall, her walls clenching around his cock. Killian groaned; a handful of thrusts later, he followed, emptying himself deep inside her tight sheath. He slumped over her back, his legs barely holding both of them up. They panted for breath, the water pelting Killian's skin. He brushed his lips to her back lovingly. "Better now?"

She nodded weakly. "Yeah."

"Can you stand, darling?"

"Maybe?"

He chuckled, forcing himself into an upright position. Carefully, he guided her to the corner where she could sit. Emma bit her lip, wondering what his reaction would be...after. But he seemed his usual self, smiling at her, stroking the apple of her cheek. "Let me get cleaned up, then I'll leave you to it, yeah?"

"Okay." She did feel better, so she took great pleasure in watching him scrub himself clean. After rinsing out his hair, he briefly pecked her lips, then opened the fogged over door and stepped out. Emma stood and shut the door behind him, grabbing her loofa to finish up. Clean once more, she shut off the almost cold water and got out. Killian was nowhere in sight but she sensed he was nearby. She dried off and got herself situated, ultimately returning to the bedroom in her panties and one of his shirts.

"Killian?"

"Right here," he said, coming back into the room. He was wearing his pirate pajama bottoms, which made her smile.

"What's this?"

"I thought you could use a little...what did you call it? Comfort food?" He held out a bag of Hershey's kisses.

"I don't have cramps," she pointed out. "And I'm feeling much better."

"So you're saying no to chocolate?"

"Hell no." She snatched up the bag. "Do I get my dashing husband to go with the chocolate?"

"That was my intention."

"Good." She leaned in and stood on her toes to kiss him. "You okay?"

"Why wouldn't I be?" he asked, hand curling around her waist.

She shrugged. "I dunno. That was...something."

"Aye. But as I said...you don't have to hide, Swan. I will happily see to your needs."

She blushed. "Um...thanks."

"How about a thank you kiss?"

She tossed the bag of Hershey's kisses aside and stood on her tip toes to indulge in a much sweeter kiss instead.