Derek Morgan/ Emily Prentiss.

Song; all I want for Christmas is you- Mariah Carey

3 prompts: cookies, gift exchange, snow

For: I luv Emily Prentiss 2012

Emily & Derek: The beginning of a new life

"I don't want a lot for Christmas There's just one thing I need I don't care about the presents Underneath the Christmas tree I just want you for my own more than you could ever know Make my wish come true all I want for Christmas is you …" Emily sings to herself as she walks back to her desk steaming hot cup of coffee in hand. She stops when she sees an amused Spencer Reid and Derek Morgan, her boyfriend of almost two years staring at her with that damn grin on his face.

"Something you need to tell me princess." Derek raises an eyebrow suggestively.

"No Agent Morgan, Dr. Reid on the other hand…" Emily winks flirtatiously at the younger agent causing his face to flush, both Emily and Derek start laughing.

"I'm going to head home I'll see you guys after the break." Reid announces as he gathers his things and shuts his computer off.

"Merry Christmas Spencer "Emily and Derek reply.

"So alone at last." Derek says a few moments later as he walks over to stand behind Emily in her chair. "What ever could we do?" he begins placing kisses on her neck.

"Derek stop, we're at work" Emily protests weakly.

"No one is here to see us. We're the only two agents in the building crazy enough to fly to Chicago at 12:30 in the morning in the middle of a snow storm on christmas eve." he spins her chair around so she is facing him and claims her lips with his, she responds eagerly.

Derek, seriously stop." Emily pulls away a short time later.

"I know, you almost ready to go plane leaves in two hours." Derek takes a deep breath. And leans against the side of Emily's desk.

"Yeah, I just have to sign this last report, there we go. All of our bags are in the car right?" Emily closes the file and starts to clean up her desk.

"Yeah, we're all set."

"Great, ooh," Emily exclaims pulling out a red wrapped box from her drawer. I wanted to give you this before we left." She smiles nervously at him as he takes the box. Her heart beats a mile a minute as she watches him open the box when he does he takes the white stick out and looks at it for several seconds. His expression changes a couple of times; from confusion to shock and lastly to the biggest smile she's ever seen. Before she knows it Derek has her out of her chair and wrapped in a tight hug.

"You're pregnant, we're having a baby. Oh my Gosh this is amazing Em" Derek exclaims and kisses her passionately.

"So you're happy?' Emily laughs nervously after breaking the kiss.

"God yes," he smiles at her. "Hold on a second," Derek lets go of her and rushes over to his own desk to get something out of his drawer. Emily does as he said and waits her curiosity getting the better of her. I was going to wait and give you this this tomorrow night at dinner, but this is perfect." He returns a bag of sugar cookies in his hand.

"Sugar cookies, you know I hate those." she states skeptically.

"Exactly," Derek begins to explain making Emily even more confused. "I know you like to steal my stuff. That's why I knew it would be a perfect place to hide this." he reaches into the bag and pulls out a small black box.

"Derek is that what I think it is?" Emily asks wide eyed.

"Shh, let me finish." Getting down on one knee he opens the box to reveal a beautiful 2 karat princess cut diamond ring. "Emily Prentiss, for the past two years you have made me the happiest man alive. I think I first fell in love with you when I found out you like Vonnegut, and that love has only grown day after day. I can't and don't want to imagine my world with out you in it, not even for a minute. Will you marry me?"

"YES! God yes!" Emily answers, throwing her arms around Derek and kissing him.

"I love you" Derek whispers resting his forehead against hers.

"I love you too." she responds as Derek slips the ring on her finger. "This is the best Christmas ever. I can't wait to tell everyone."

"Definitely, why don't we start by heading to the airport so we can tell my mom." Derek agrees.

"Let's go." Emily says, after on more kiss the two profilers grab their jackets and head to the parking garage ready to start their first Christmas vacation as an engaged couple.

~ The End

A/N: there it is, Earlier today I had a 5 and a half pages written and decided I didn't like it. This one kind of took on a life of its own, I plan on updating this here and there with oneshots of the major moments in their lives together so stay tuned. I hope you enjoyed it!