Post-series • AU • Kate and Rick have a 5-month-old son (named Teddy because my brain literally cannot think of anything else. Real name, nickname, I don't care).

Daddy's Jealous

When those first, sleepy cries echoed through the baby monitor as the sun rose, she groaned and gently nudged his shin with the heel of her foot.

She expected his usual mumbled "S'your turn" - especially so considering he had volunteered himself for the 2am bottle - but he simply pressed a kiss to her shoulder before slipping from the sheets and plodding upstairs.

After several quiet minutes, soft grunts and coos filled the sleepy silence of the loft. She pried her eyes open, one at a time, and looked toward the door where her boys stood in the soft glow of morning sun, smiling brightly at her.

"Good morning, Mommy," Castle whispered as he waved their son's hand in the air.

"Morning Baby," she sung back as she shuffled upright in bed, leaning back against the headboard.

"I wasn't going to wake you, but I figured seeing as his last feed was a bottle, you might wanna..."

"Yeah, I've got it." She unbuttoned her pyjama top before slipping it out of her way and reaching out for Teddy.

"Ah, I remember the days when I had to actually put a considerable amount of effort into seeing your boobs," Castle reminisced as he passed his son off to his wife.

She laughed heartily. "Now they're just out... all the time."

"Hey, I'm not complaining," he assured her with a beaming smile. "Have you got everything you need?"

"Yeah, I'm good." She looked up at him, smiling, once Teddy was latched and settled. "Thank you."

He pressed a kiss to the top of her head. "I'll be right back."

He came back into the room fifteen minutes later with a tray of breakfast: coffee, a slice of toast and an assortment of fresh fruit cut up into easy bite-sized pieces for her.

Her eyes widened and her mouth opened slightly as she watched him place the tray on the bedside table.

"For me?" she asked, still awed by all these little things that he does for her.

"It certainly is," he said with a smile, tilting his head as he took in the relaxed state of his wife and son. "Is he all done?"

"Yeah, think so." She looked down at their beautiful boy's face and bright blue eyes looked back at her. "He's just kinda nuzzling now."

"Good job," he praised Teddy, taking him from Kate's arms. "You eat your breakfast, we'll go get dressed."

He turned and began to walk away, cooing and talking to their son. "We're going to try on a new outfit today. I think Mommy is going to love it."

When Castle returned, he held Teddy's back to his chest so that the boy had a perfect view of his surroundings. As soon as his eyes landed on Kate, he grinned a wide, gummy grin and jerked his arms and legs around excitedly.

"Hey, Baby," she greeted him enthusiastically. "Look at you!"

She laughed, taking in the new outfit: a fluffy white bath robe with matching white slippers.

"That might be the cutest thing I have ever seen," she mooned.

"Might be?" Castle gasped theatrically, cupping his palm over Teddy's ear. "Don't you listen to her!"

"As adorable as this is, don't you think it's a little warm for him to be so wrapped up?"

"You're totally right," he agreed - too easily in her opinion - as he laid Teddy down on the bed in front of Kate. "You should unwrap him."

She raised her brow at him, knowing him well enough to know that he was definitely up to something.

Slowly, she reached out for the neatly tied bow of the teeny tiny robe and pulled on it. Teddy kicked and squealed excitedly.

"Is there a surprise under here?" she asked, as she gently poked at the boy's chubby thighs. "Hey? Have you got a surprise for Mommy?"

Teddy squealed again, flapping his arms around.

Kate opened the robe to reveal a onesie she didn't recognise. After quickly reading the words printed on it, she shook her head and rolled her eyes, but couldn't stifle her grin.

My Daddy is jealous... I had BOOBS for breakfast.

Kate leant down and placed an exaggerated kiss on Teddy's cheek, pulling back with a loud pop of her lips that had the infant giggling hysterically.

"Your daddy is so silly," she cooed.