Karisa tweeted this idea, based on the bed scene from Monday's episode, and I just had to...

Fast Forward about 5 years and this is "Oh shit, the kids are awake"

It had been a long day but Kate was finally home and comfortable. She'd treated herself to a long, relaxing shower while Rick put Sofia and Matthew to bed. Sofia was just six months old but she had been a wonderful sleeper from birth. Matthew was three and a lot more trouble; he'd been being a pain all evening and Kate had been very relieved when Rick had offered to do bedtime.

He was sitting in bed when she came in. She dropped her white robe on the chair beside the bed and tucked herself under the covers.

"Good shower?" he asked, admiring the way her baggy shirt had slipped off her shoulder revealing her glowing skin and perfect collarbone.

"Heavenly," she said with a seductive smile. "Was Matty okay?"

"Could have been worse. Although I think that kindergarten doesn't work them hard enough."

"Work them – you mean child labour?" she teased. He made a face.

"You know what I mean. He's never tired when he comes home. They even have naps there. He doesn't need naps, he needs to run around, so he's tired when he comes here."

Kate smiled. "You don't really want him to be tired when he gets home. You want him full of energy for your laser tag tournaments. And I'm still annoyed about that ornament, by the way."

"I'll get you another one."

"I don't want another one," she said, but her grin was already slipping back to her face. She leaned towards him.

"You're miraculous, you know that?" he whispered just before his lips touched hers. He meant it, too. No matter how many times she kissed him, how many times they made love, it was just as perfect and wonderful as their frenzied first time – if a little more relaxed. His fingers began exploring the rim of her tight grey hot pants and she moved in closer-

They pulled apart and looked towards the doorway. They had both heard the clatter from Matthew's room. Rick jumped out of bed and Kate vaulted after him; they both ran along the passageway to get to their son.

Kate loved the new house. They'd moved when they found out she was pregnant. It had been expensive to get somewhere so big in the city but she had wanted to keep her job and Rick wanted to say close to Alexis, who was now doing a PHD at Columbia. The schools there were better too... and there was something about New York which attracted them both.

Matthew was lying on his bedroom floor, crying bitterly.

"What's the matter, honey?" Kate asked, kneeling down in front of him as Rick surveyed the 'crime scene' to see what had happened.

"I feel out of bed," Matthew sobbed. He had the racing car bed that Rick had always wanted when he was little, and had apparently been attempting some kind of complicated manoeuvre when he fell out of it and hit his head. Kate checked the little bump and sighed.

"You're going to be fine," she told him. "How do you feel?"

"It hurts," Matthew sniffed. Kate looked up at Rick. Their son was adorable, but he could be a little manipulative.

"You want anything?" Rick asked him. "A glass of water, maybe?"

Matthew's eyes lit up. "A cookie?" he asked hopefully.

"Too much sugar," Rick said apologetically. "Some cereal – not the sweet kind," he added when Matthew opened his mouth to speak.

"It's okay," Matthew said eventually, surprising his parents. "I'll just go to sleep."

Kate raised her eyebrows. She couldn't believe they were getting of that easily.

"Okay," she said, lifting him back into bed and tucking the blanket around him. "You give us a shout if you need anything, or if your head hurts more."

"Okay," he said happily. Rick leaned down to kiss his son goodnight. They left the room, leaving the door open a crack so some of the light from the landing could get in.

"What just happened?" Rick whispered when they were back in their own room.

"I have no idea," Kate said. "Maybe he sensed our mood," she suggested with a smile. Rick laughed and pulled her towards him to get back to where they left off. They tumbled onto the bed and both felt their heart rates increase. Kate took off her top to show her flat, toned stomach. Rick had great respect for it but she insisted it was genes – she hadn't had trouble losing weight after giving birth to either of her children.

"I wouldn't mind," he was fond of telling her when she turned down a second slice of cake or an ice cream when they were at the park. "You'd be all soft and squishy."

"You want me squishy?" she would say, taking the food he offered her. She still went running, though. Her legs were to die for. Especially when they were wrapped around his waist.

Rick's shirt hit the floor too and he began trailing kisses down his wife's neck and across her chest. Kate let out a gentle moan – and then she heard something.

"Castle-"

"What, Castle?"

Kate laughed at the now very old joke, but reluctantly sat up and looked around for her shirt. Rick pretended to help.

"What is it?" he asked her.

"I heard Sofia," she said. She found the shirt and put it on.

"She's not crying," Rick said.

"No, but she's awake. Maybe she's hungry again."

"Then why did you bother putting your top on?" Rick joked. "She never needs feeding at night, Kate."

"She didn't have as much earlier. I'll just see. Or her diaper might need changing. And it's your turn for that, by the way."

Rick followed her into Sofia's room and sure enough, the little girl was awake. Kate lifted her out of her crib and settled in the armchair, shocked at how quickly everything she had been feeling in the bedroom with Rick disappeared, morphing into motherly emotions. She could tell the same thing was not happening to her husband.

"I still can't decide if that's not or not," Rick said as Kate guided her breast into Sofia's mouth.

"Not," Kate said firmly.

"It's hot when I do it," he argued.

"For a sensible, intelligent, grown man, you really are such a child sometimes."

"You love me for it."

Kate winked at him. "Yes, I do. You should remember that Sofia might well understand everything we say."

"I don't think so," he said.

"Oh, I don't know. She's getting close to talking - and babies understand before they talk."

Rick laughed. "I thought I was the one who believed in crazy stuff."

"It's not crazy."

"She's a baby, Kate. She's adorable, but she's a baby."

"Next time you want to go unicorn hunting, I'm not coming," she teased. Sofia stopped suckling and after a few attempts to get her to start again, Kate wiped her mouth with the tissue Rick handed her and put her back to bed.

Rick sighed at the satisfied smile on Kate's face. "You feel all motherly now. All happy and content."

"So?"

"So, you don't feel like sex any more," he told her as they walked back to their room."

"Yes I do," Kate lied.

"I know when you're lying. We've been married for four years and that's not even counting all the time you were my work wife."

"You don't know when I'm lying. I lie to you all the time," she said with a wicked look in her eyes. They were sitting in bed again. Kate managed to keep a straight face in front of his wounded one for about ten seconds before she erupted into giggles.

"Rick. You know I don't lie to you, or anyone, for that matter. And I very much want to make love to you. Just... give me a minute."

Rick laughed. "A silent minute? An elastic minute?"

"Any kind of minute."

"I could talk dirty to you," he said seductively. She doubled over with laughter and he pulled her closer to him on the bed.

"You smell like cherries," he growled, knowing this would set her off again.

"I do this one thing with ice cubes," she countered. "Your face when I said that... priceless."

"Did you already want me then?" he asked. She raised her eyebrows.

"You know I did."

He smiled. "I want you now."

"You can't quite pull it off," she said, patting him on the head then tugging her shirt off again. "But I'll forgive you."

"Thanks, babe," he said, putting extra emphasis on the word that really didn't fit. She climbed onto his lap and straddled him, stroking him gently as his mouth found her breast and produced an entirely different sensation from the one she had felt earlier. She arched her back to make it easier for him to reach, and pushed her knees up and shuffled around so he could get her hot pants off.

"These are absurd," he said when he'd finally helped her to scramble out of them.

"They're incredibly comfortable," she countered, then kissed him before he could respond. His fingers found her centre and she gasped as he touched her the way only he knew how.

"Mommy!"

"Seriously?" Kate groaned as she struggled back into her shorts and shirt. Rick licked his fingers. "Screw you," she said.

"You're going to," he told her.

"Oh... shush," she said as she left the room.

"What's up, Matty?" she asked her son.

"I'm thirsty," he said. Kate smiled at him.

"I'll get you a drink. You go back to bed and wait there, I'll be back in a minute."

Rick followed her down to the kitchen.

"I love having children," he said honestly.

"Me too," she replied. "But sometimes I wish we could switch them off for the night."

Rick laughed and handed her a glass of water. "Want one for yourself as well?"

"If we get interrupted again, you're going to deal with it and I'm finishing by myself," she said, hurrying back upstairs. She gave Matthew his water and he took a sip.

"Will you be alright now?" she asked a little hastily.

"Yes," he said. If he caught her tone he didn't know what to make of it. She gave him a quick hug and said goodnight. Rick was waiting for her in bed. She closed the door behind her. He patted his lap and she shucked her clothes before climbing onto him.

"Maybe you should just be quick," she teased as her hands found him again.

"You sure? At this rate we could make it last all night."

She squeezed him, hard, which was enough to shut him up. Then she grinned and his mouth latched onto her breast again.

There was a crash.

"That was the glass," Kate said, putting on her robe this time. They both went to clean up the water; Rick was very aware of his crotch as he swept up the broken glass.

"Can I... Can I have a story?" Matthew asked. His parents sighed and settled down either side of him with his favourite book about trains. They knew all the little stories off by heart – Kate was sure Matthew did too but he still loved to hear them.

Half an hour later, they gently got off his bed. He was fast asleep. Kate stifled a yawn as they left the room.

"No..." Rick said as he heard it, but then he was yawning too.

They got back to their room and he kissed her again but he had to yawn a second time and that started her off again... She lay down in the bed and he lay beside her, his eyelids drooping.

"We could still-" he began half heartedly.

"I still want to..." she said sleepily.

"Tomorrow," they said together. Kate snuggled against Rick and he stroked a heavy hand through her hair.

"Love you," he murmured.

"You too," she said, already feeling her body fall into a deep slumber.


A/N: As I said, not my idea, I just loved it. I hope you liked the story, please review!