A/N: Merry Christmas, everyone!

Christmas morning, Daisy was awoken by the feeling of Fitz and Simmons leaning over her to kiss.

Blinking her eyes open, she sleepily mumbled, "Merry Christmas, guys."

"Merry Christmas, Daisy!" replied Simmons far too brightly for six o'clock in the morning on a day Daisy didn't have to be up early to train with May, before the older girl leaned down to give her a cheerful kiss.

"Merry Christmas, girlfriend," yawned Fitz in a much more appropriately sleepy, and more heavily Scottish than normal because of it tone.

Once Simmons had removed her lips from Daisy's, Fitz leaned down and captured the younger girl's lips briefly as well, before pulling back, both of the two Brits sitting up straight against the headboard on either side of her. Too comfortable and happy nestled between the loves of her life to pay much attention to what her girlfriend was doing, Daisy was only half aware of Simmons leaning over to her nightstand and pulling something out, before a small, wrapped box appeared in her field of vision.

"Your Christmas gift," said FitzSimmons in sync, causing Daisy to chuckle as she sat up between them and took the gift from Simmons.

Unwrapping it, she found an ornate wooden box, with highly detailed carvings covering all six sides of it: bits of the map to the city that gave her her powers, molecular diagrams that obviously meant something special to Simmons, and engineering drawings of Fitz's, a few of which she recognized including her gauntlets, Coulson's hand, and Zephyr One. Opening the box up, she found an old-fashioned looking metal key lying inside, that looked like it had been forged by hand by Fitz.

"What's this?" she asked as she took the key out and held it up, looking at it in the light of the room.

It had three teeth of almost, but not quite the same length, reminding her of the slight height differences between the three of them, and if it hadn't been polished and made from some rare material she was pretty sure she'd seen Fitz installing on Zephyr One when he was overseeing the building of their ship, she would have thought it came from the sixteenth or seventeenth century the way it was shaped.

"It's symbolic, really," answered Fitz, "since all the locks on this base are keypad and don't have any physical key locks on them, and you already know the combination, but —"

"It's the key to our room," cut in Simmons, too impatient for her husband to finally get around to saying what the key actually symbolized — she loved him dearly, but he really could be long-winded sometimes. "We wanted to ask you to officially move in with us."

"Which you already have, really, but —" At a glare from his wife, Fitz quickly redirected. "But we wanted to officially make Jemma and I's room into our room," motioning between all three of them.

Daisy's eyes filled with tears, and she flung her arms around the two of them, pulling them tightly to her. They hugged her back tightly, holding her securely between them, letting her shed her tears of joy.

"Thank you — thank you so much," Daisy whispered from between them, her voice cracking. "I love you guys so much."

Simmons immediately said, "I love you too, Daisy," as Fitz asked at the exact same time, "So you accept?", a response which earned him a swat from his wife. So he quickly added, "And of course I love you too, Daisy."

Daisy pulled back slightly, her eyes still glistening, and looking Fitz full in the eyes said seriously, "Of course I accept, Fitz."

Then to solidify her point, she leaned forward and pressed her lips soundly against his. Pulling back several seconds later, she leaned over and did the same to Simmons.

"I can never thank you guys enough," she said with a watery smile once she sat back again, wiping away the tears still collected in the corners of her eyes with the back of her hand. "Makes the gifts I got you guys seem trivial in comparison."

"Oh, love, this isn't our individual gifts for you under the Shield Christmas tree," replied Simmons, rubbing Daisy's arm lightly. "This is something Fitz and I have been talking about doing for a long time in some way or another. But since you really do already live here for all practical purposes, we knew there was no haste in making it official like this, so we decided to do it for Christmas as something special — which is also when we came up with the idea of a key as a Christmas present. But this is something separate from our normal gifts — we still have our regular Christmas gifts for you for when everyone opens their gifts, that yours to us always beat anything we can come up with to give you."

"And you just willing to be with Jemma and I is more of a gift than we can ever match," added Fitz. "You're the real gift here."

Daisy launched herself at her boyfriend, openly crying into his chest as she hugged him tighter than ever, Simmons lightly rubbing her back. The three of them sat there like that for a long time, until eventually Daisy's voice came muffled out from Fitz's chest.

"I love you."