prompted in my PMs by EdzaR: 'Babysitting 3-year old Rosie around the park, leading to fluff or cuteness ofc.' I hope you enjoy it!
"So, just call me if there's an emergency," John explained. "Obviously call 999 first and then me."
"John, it'll be fine," Sherlock insisted, a three year old Rosie in his arms. She was excited to spend the day with her Uncle Sherly. "Besides, Molly will be here in five minutes."
"Aunt Molly, Aunt Molly!" Rosie exclaimed.
"Alright," John chuckled, "it seems you've got it handled from here."
"Indeed," Sherlock insisted. John kissed his daughter's head of fair curls and left for his double shift. The consulting detective lowered his goddaughter into John's chair.
"When's Aunt Molly coming?" Rosie asked, kicking her legs excitedly.
"Soon," Sherlock replied, perusing the books on his shelf.
"I love Aunt Molly," she continued. "You love Aunt Molly too."
"I do," Sherlock smiled.
"Phew, that's a relief," Molly teased from the doorway. "For a second there, I was doubting our entire relationship."
"Aunt Molly!" Rosie shouted, running toward her to give her a hug.
"Hello there, sweetheart!" Molly beamed. "You weren't too much trouble for Uncle Sherlock were you?"
"I am perfectly capable of taking care of Rosie," he defended.
"Oh, I know," Molly laughed, "I'm just teasing."
"Hmmph," Sherlock grumbled, his arms crossed. Molly padded her way over to him.
"Cheer up," she told him. "I wouldn't tease you if I didn't love you." She pressed a chaste kiss to his cheek, gaining a crooked smile from her love. Turning to Rosie, she said, "Why don't we go to the park today? The weather is so nice."
"Yes!" Rosie agreed enthusiastically.
"You up for it?" Molly asked Sherlock.
"I'm up for anything," he replied with a smirk.
It was warm and breezy. Sherlock had Rosie in his lap and Molly sat next to them beneath the large tree in the park providing shade. They had stopped for ice lollies to quench their thirst.
"Thank you, Uncle Sherly," Rosie told him, having another taste of her frozen treat.
"You're most welcome," Sherlock told her, pressing a gentle kiss to her mop of curls. Molly smiled at the display, her heart warming. Once the little Watson finished her ice lolly, Molly wiped down her hands to rid the sticky substance from her skin. After being cleaned up, Rosie skipped off to the swing set across the park, still in her godparents' field of view.
"You're so good with her," Molly complimented him. "And to think there was a time when you were so impartial to children."
"Yes, well, she is a lot like her mother," Sherlock remarked. "Just as stubborn and feisty."
"That she is," Molly agreed, laying her head on his shoulder. Rosie was socializing with the other children and she briefly turned to wave at her godparents. They waved back with smiles. Sherlock laced his fingers with Molly's, squeezing her hand affectionately.
Moments later, Rosie returned to them.
"Uncle Sherly, can I tell you something?" she asked.
"You can tell me anything, Rosie," he encouraged.
"I—I need to whisper it," she told him, leaning down toward his ear. "Take this and give it to Aunt Molly." Rosie snuck the item into his left hand. He glanced down briefly to see the plastic ring she wore that was in the shape of a flower.
"And what am I to do with this?" Sherlock asked.
"Don't be stupid, Uncle Sherly," Rosie scolded him. Sherlock's jaw dropped in mock-seriousness. "Ask Aunt Molly to marry you. I know you want to." She whispered this in his ear.
"And you deduced that did you?" Sherlock smiled proudly.
"Mhmm," she confirmed. Another moment passed and Rosie made a face of annoyance at him.
"What?" he asked.
"Now, Uncle Sherly," Rosie told him.
"Right here? Right at this moment?" he asked.
"Alright, what are you two on about?" Molly laughed. "I can't take it. What's the big secret?"
"Um, Molly," Sherlock began, clearing his throat. "I need to ask you something very important. I did have this planned out for a later date but our goddaughter insisted." He squeezed her hand tighter before placing a kiss on the back of it. "I love you so very much, darling."
"And I love you too," Molly giggled. Sherlock pressed a soft kiss to her cheek. Rosie was bouncing with anticipation waiting for her godfather to just spit it out.
"Molly Hooper," Sherlock paused momentarily, "I want to marry you; to be your husband and for you to be my wi—mmph!" Molly was snogging him silly. Her lips pressed firmly to his before peppering his face with kisses.
"Yes, definitely yes," she murmured between kisses. "Sherlock Holmes, I want to marry you too." The smile on his face could light up the universe.
"I hope this will suffice until we get back to the flat," he chuckled, slipping Rosie's plastic ring on Molly's finger.
"Oh, it's perfect! Come here, you," Molly laughed, pulling Rosie in for an embrace amongst the three of them.
"Good job, Uncle Sherly," Rosie cheered. They laughed together, all in high spirits from the day's events. Soon enough, their goddaughter persuaded them to play tag with her.
"Rosie and I are a team," Molly informed him, giving the little Watson a high five.
"Now, how is that fair?" Sherlock playfully complained.
"You better run, Uncle Sherly," Rosie warned him. He went off at his normal speed but slowed down enough for her to catch him. "Gotcha!"
"Ugh, oh no!" Sherlock exaggerated dramatically. Now, it was his turn to catch them. "You should run Miss Hooper, for I will always chase after you."
"You better," Molly winked before taking off running. It didn't take long for Sherlock to catch her, his arms wrapped around her waist, pulling her to him. He pressed playful kisses below her ear, making her squirm under his grasp with breathless laughter escaping her lips.
"Mm, I believe I've captured you," Sherlock teased.
"You've had me since the first time we met, my love," Molly flirted.
"Betcha can't catch me, Uncle Sherly!" Rosie shouted.
"Don't be so sure, Rosamund," he told her. "The game is on!" Her little legs carried her far but not quickly enough. Sherlock picked her up in his arms and spun her around, her tinkling laughter filling the air.
"Alright, you two, it's nearly time for dinner," Molly smiled. They walked back to Baker Street with Rosie between them, holding onto each of their hands. She couldn't wait to tell her dad that her godparents were finally engaged.