A/N: As promised, here is the first chapter of the day (next one will be up in a few!) Hope you enjoy. Everything goes to its rightful owners.

The days flew by fast, and before Olivia knew it, it was Thursday. She had just dropped Calvin off at school, and was heading to the precinct for her first day back. Entering the building, she made her way towards the elevator. She pushed the button and the doors shut, then reopened on her floor.

"Welcome back," Munch greeted as Olivia made her way to her desk.

"Thank you."

"How was it?" Fin asked.

Olivia shrugged, "Fine. Everything went well. The girl I was protecting left for a smoke break and got banged up pretty bad by the perp, but luckily as soon as I pulled my gun, she stopped."

"Wish all cases were that easy," Fin commented.

"Where's the excitement in that?" Elliot asked walking in.

"What exactly happened on this case while I was gone?" Olivia questioned, looking between the other three detectives.

"A woman came in and said her baby was abducted," Elliot started.

"Turns out that she had also had three other babies abducted in three other states," Munch filled in.

"First one was her biological baby, who she sold for drugs, complained to the police it was abducted, and then she would lie saying another child they found was hers, and repeated the process. We got all of the other kids back to their real parents," Fin finished.

"Mm," Olivia commented, grabbing some paper work. "Heard that one before."

It was silent except for the scribbling of pens and the occasional chatter as the detectives did paperwork. Olivia finished up her last one for the day and stood up, grabbing her stuff.

"Where are you going?" Elliot questioned.

"To lunch, I technically don't even have to be here, remember?"

"Yeah, yeah, yeah."

Olivia walked down to the elevator and pressed the button. Surprise flickered across her face as the doors open and she recognized the person inside.

"Olivia, when did you get back?" Casey Novak asked with a smile.

"Yesterday," Olivia answered with a sigh. "Going to lunch?"

"Yes. Would you like to join me?"

"Oh no, I'm meeting…somebody…"

Casey turned to her, a dangerous grin on her face, "Oh really?"

"Uh-huh."

"Who might this be?"

"None of your business," Olivia said half jokingly.

"Aha, touchy. What would you do if I followed you to your date?"

"Who said anything about a date?"

"Just answer the question."

"Blackmail you," Olivia said casually.

"You don't have anything to blackmail me with," Casey responded confidently.

"Remember that one night Calvin was on a paparazzi spree?"

Casey's eyes narrowed. "Point taken."

"Thank you," Olivia said shooting her friend a smile before leaving the elevator right as the doors pulled open.

-.-.-.-.-.-.-.-.-.-.-.-.-

Olivia pulled up to the café on full alert so Marcus couldn't surprise her again. No way, no how. She saw him pull in to the parking space in front of her, so she got out and walked over to the curb to wait. He grinned at her as he got of his car and walked over. "Hi," He told her, giving her a light hug. Olivia wrapped her arms around his waist slightly before he pulled away. "Shall we?" He asked her, grabbing the door. She smiled at him before walking into the familiar restaurant.

"If you want to go sit at a table I can order for you," He told her. "What would you like?"

"Hm…the garden salad."

"Okay." He moved to get in line while Olivia went to sit at a table.

She sat facing the door so she could watch him from the line. There was only one person ahead of him, but that person was taking forever and kept changing his mind. Marcus turned to her and made a face, causing Olivia to laugh. She received some strange looks from other customers around her, but Marcus grinned at her before stepping up to order.

He returned minutes later, carrying a tray. He set her salad down in front of her, and a glass of water. He then set a turkey sandwich and another glass of water in front of his seat before putting the tray on another table and sitting down. "What time is the surprise party tomorrow?"

"Like…five. I'll set up while Calvin's at school, then Elliot will be there letting people in while I keep Calvin busy after school."

"Very smart," Marcus admired. "What would he like for his birthday?"

"You don't have to get him anything," Olivia assured.

"I know, but I want to. Ah, I know just what to get him."

Olivia narrowed her eyes, "What?"

"Nu-uh. You might accidently give it away. I'm not telling."

"That's not fair."

"Sure it is!"

Olivia huffed.

"What do you think about marriage?" He asked suddenly.

"What?" Olivia asked, eyes widening.

"Oh, that wasn't like a proposal or anything," Marcus stuttered, blushing deeply. "Not that I wouldn't, I mean…" He took a deep breath. "Are you against it?"

"Against marriage? No, I'd like to get married someday," Olivia answered slowly.

"Have you ever been married before?"

"No."

"Me neither."

"That's good to know," Olivia told him jokingly.

"Extremely."

"So… you spent the afternoon with Calvin Saturday?"

"Yes, I hope that was okay," Marcus told her.

"More than fine, he had a great time. Almost can't stop talking about it," Olivia said with a smile.

"That's great," Marcus responded, seeming thrilled. "He's a great kid… I really enjoy spending time with him. And you, of course," He added with a slightly bashful grin.

"Well, I'm pretty sure I can speak for Calvin when I say we really like you too…"

Marcus reached for her hand across the table and held it with his lightly. "You really want to know what I want to get him? I would like to run it by you first of course."

"Yes."

"Well I was thinking…"

-.-.-.-.-.-.-.-.-.-.-

Before Olivia knew it, it was the Friday of the party. Time had flown by; most of Olivia's free time was spent making sure Calvin didn't find his present's Olivia had hid. And lucky for her, he never looked in her top dresser drawer.

She had just picked Calvin up from school, and was taking him to the grocery store, to pick up some things, though the real reason was so Elliot could finish preparing the apartment and get everyone situated before they got back.

"Why are we here again?" Calvin asked as they walked into the super market.

"To pick up some stuff for the weekend." It was getting extremely hard not to let the surprise slip to Calvin, but Olivia refused to ruin the surprise.

"Why didn't we go to the movies like we always do? Marcus could've come…"

"Nothing good is there, remember? And Marcus already had plans," Olivia told him, laughing slightly to herself.

"Oh," He responded, disappointment clouding his face.

"Aw, come on, cheer up!" Olivia said, wrapping an arm around his shoulder. She realized with a jolt that he came up to her shoulder now. "Why don't you pick out some junk for when Eric and George come over tomorrow?" Olivia had told him that George and Eric could come over for his birthday before she thought of the surprise party, they were spending Saturday night with them at the apartment.

"Okay…" He swerved towards the junk aisle. Grabbing a bag of Oreo's and a bag of Goldfish. "Can we get some pizza rolls too?"

"Whatever you want, we can get."

"Sweet," Calvin quickly handed the junk to Olivia before rushing towards the frozen food aisle.

"Calvin," Olivia called out, rushing to follow him. She went down the aisle and froze; he wasn't there. "Calvin," She called out, looking around. Olivia started looking at all of the people that passed. She walked back towards the junk food aisle, thinking he might have come back the other way, thinking she was waiting there. He wasn't down that aisle either. Panic started to set in and Olivia forced herself to take a deep breath. Suddenly…

"Boo!" Calvin yelled, poking her in the back sharply.

Olivia spun around. "Calvin Benson," She scolded.

Calvin started laughing, "You should have seen your face." He looked up at her face and stopped laughing at her expression. "What's wrong?"

She cupped his face with her free hand, "Don't you ever scare me like that again, okay?"

He leaned forward and gave her a quick hug, "Sorry. I was just kidding around." He held up a box, "I got the pizza rolls. And…" He picked up a bottle he had dropped. "And a coke, that's all I could think of."

"You ready to go then?" Olivia asked, still trying to slow down her racing heart.

"Yup," He nodded, making a popping sound when he pronounced the p.

"Let's go home then," She smiled, leading him towards the checkout lines.

-.-.-.-.-.-.-.-.-.-.-.-.-.-.-

"Why are you in such a hurry?" Calvin panted as they were climbing the flights of stairs to their apartment. Olivia was currently about ten steps below Olivia, who was already standing on the level of the apartment.

"You'll see. Now hurry up!"

Calvin groaned before quickly climbing the last few steps. He followed her to their apartment. Olivia unlocked the door with her key before turning towards him. "Here, hand me the bags, then go inside."

"Where are you going?" He questioned, handing her the two grocery bags.

"I'll be right behind you," She assured. "Go on in."

Calvin gave her a confused look before turning the hand, opening the door and walking inside. He flipped the light on as he went in. A handful of people jumped out from behind various places and yelled, "Surprise!"