Olivia woke up to an empty bed and just looked confused for a second where Mark was. She got out of bed and went out of the room and was quickly greeted by Mike and Matt.

"Hi mommy"

Olivia smiled and kneeled down "Hi boys"

Matt wrapped his small arms around her neck as Mike did the same and both rested their small heads on each of her shoulders.

"Mommy?" Matt asked.

"Matthew?" Olivia teased as she gave each of them a kiss on the head.

"When is the new baby going to get here?"

"It depends but the baby will get here in a couple of months" Olivia answered "Are you guys excited for the baby?"

"Will it be a boy like us?" Mike asked as he gave her a kiss on the cheek.

"We don't know but we will find out soon" Olivia answered.

"Who said you were boys?"

Olivia turned around to the voice and spotted Mark.

"Daddy" Both boys whined.

"Well you guys can be girls but we lied" Mark teased smiling. The twins exchanged looks and started to chase him. Mark laughed and playfully ran away into the living room.

Olivia smiled and went into the kitchen and spotted Brad and Casey sitting there "What are you guys doing here?"

"Is that the way you treat your guests?" Brad asked smiling.

"Yes when its early in the morning" Olivia answered and went to the fridge.

"We were on our way to see Brad's parents so we thought we stop by" Casey answered.

Mark came into the kitchen with Mike on his back and carrying Matt in his arms. "Ha ha you have in-laws," He teased looking at Casey.

Casey looked at him and stuck out her tongue.

"Mature" Mark teased and stuck out his tongue. The twins laughed and did the same as their father.

Brad smiled and stuck out his tongue at the boys.

Olivia rolled her eyes and shook her head "Who am I friends with"

All of them laughed and put their tongues back.

"Mommy we beat daddy in wrestling" Mike announced proudly.

"Anyone can beat your dad in wrestling" Brad teased smiling up at Mark.

Mark looked at him "Did you just insult your boss?"

"I thought you weren't my boss after work hours" Brad was completely serious.

Mark shook his head and put the twins down on the ground "Boys want to see your dad beat uncle Brad in arm wrestling?"

The twins smiled widely and nodded.

"Not in the kitchen" Olivia said looking at Mark.

Mark sat down across Brad and Casey. "C'mon Stewart" He put his hand on the table.

"Guys c'mon" Casey whined.

"Bring it on Anderson" Brad said as he grabbed his hand to arm wrestle.

"Call it boys" Mark said looking at the twins.

"Go!" The twins yelled at the same time.

Both brad and Mark didn't move since they had the same strength.

"They are such losers," Casey teased smiling and kissed Brad on the cheek "C'mon sweetheart"

Olivia smiled and went behind Mark and wrapped her arms around his neck from the back "You can beat him baby" She gave him a light kiss on his neck.

Brad and Mark exchanged looks and smiled as they kept arm wrestling.

"I swear Brad you beat me in my own house and you will regret it" Mark warned with an evil grin.

"What are you going to do?" Brad asked smiling.

"Boys go in your room for a second," Mark said looking at the twins not wanting to witness what was going to happen next. The twins did as told.

Brad smiled and winked at Mark and slammed his wrist down "Oh yea I win"

Mark smiled and grabbed Casey's face and gave her a long kiss.

Brad looked at him with wide eyes.

"Don't worry that doesn't mean anything" Olivia assured him smiling and shaking her head.

Mark broke the kiss and smiled "Told you, you would regret it"

"I didn't regret it" Casey said with a smile and wiped her lip.

"Casey!" Brad yelled.

"What? He is a good kisser" She defended with a small shrug.

"Don't worry Brad their kiss is so mutual I think that a brother and sister kissing is more passionate then them" Olivia said with a smile and hit Mark in the back of the head.

"You people are so weird" Brad mumbled.

"Want to kiss my wife?" Mark offered smiling. Olivia hit him in the back of the head. "Kidding"

"Ok we had enough craziness for the morning, lets go before my parents go nuts" Brad said as he got up and took Casey's hand.

"Bye, bye" Casey said waving at them as she followed Brad out of the house.

Olivia looked at Mark.

"What?"

She kept looking at him as she crossed her arms on her chest.

"Am I in trouble?" Mark asked looking at her. She nodded "I'm sorry"

Olivia sat down in his lap and wrapped her arms around his neck "I'm supposed to be your first kiss in the morning" She pouted.

Mark smiled and wrapped his arms around her waist "Casey wasn't my first kiss"

Olivia smiled rested her head on his shoulder "No?"

"Nope. Don't tell Casey but Brad and I made out in his car early this morning" Mark teased as he moved her hair out of her face.

Olivia let out a chuckle "That's great I'm married to a bisexual"

Mark laughed and kissed her cheek "Don't worry I like breasts more" He whispered.

Olivia laughed and gave him a kiss on the neck "You like penises you liar" She teased in a low voice

"I especially like your breasts" He whispered smiling.

"And you like your own penis"

"Who doesn't like my penis? You love my penis" He whispered and lightly nibbled on her ear.

She laughed and gave him a kiss on the lips. He deepened the kiss and after awhile broke the kiss gently.

"Wow Mark"

"Casey didn't get a kiss like that"

Olivia smiled and ran her fingers through his hair and rested her hands on the back of his neck "You're so cute"

"I know" Mark said smirking and gave her a kiss on the stomach and placed his hand there.

Olivia rolled her eyes with a small smile "A conceded cutie"

Mark grinned, "Just the way you like them"

Olivia smiled and gave him a kiss.

Jenny walked into the kitchen hurriedly "Morning"

"Morning" Both said in unison.

Jenny started to open drawers in the kitchen extremely fast.

"Olivia I think our daughter has lost it" Mark teased as both watched her.

"I lost my keys and I'm late for work," Jenny explained.

"No I'm pretty sure you lost your mind" Mark teased.

Olivia slapped his chest "Be quiet"

Mark rolled his eyes and rested his head on Olivia's shoulder.

"Dad can I take your car?"

"I have to drive mom to the doctor"

"Damn it"

James came into the house. Jenny looked at him and spotted her car keys in his hand "Idiot" She grabbed the car keys from him and rushed up to her room to get ready.

"What was that all about?" James asked as he opened the fridge.

"You took her car keys" Mark explained "And if I remember correctly you are grounded"

"You were serious about that?" James asked as he opened a can of soda.

"Yes" Olivia answered looking at him in disbelief.

"Oh well can I be grounded after this weekend cause I have a party to go to?" James asked as he leaned on the counter top in the kitchen.

"No. You are grounded, go up to your room now" Mark ordered.

"At least I didn't get a girl pregnant and then get married to someone else" James mumbled as he walked past them.

"What was that?" Mark asked looking at him.

James stopped and turned around "You heard me" he said and walked out of the kitchen.

Olivia and Mark looked at each other.

"I'm not going to deal with this right now" Olivia said as she got off his lap "Lets get ready and go to the doctor"

Mark nodded and followed her.

Brad drove the car being quiet.

Casey looked at him "What's wrong?"

"With the exception that you kissed my boss nothing"

"Mark is like my brother, if you start with that crap I swear I will call this wedding off" Casey snapped.

Brad said nothing and kept looking at road. Casey looked out of the window and neither said a word to each other.

After a while Brad pulled into a driveway and stopped the car "We're here" He said quietly.

Casey said nothing and didn't move. Brad got out of the car, went around and opened the door for her. She kept sitting there and not moving.

He kneeled down by here and took her hand "I'm sorry"

"That kiss didn't mean anything I swear," She said quietly.

"I know and I'm sorry" He gave her a kiss on her hand and then kissed her stomach "C'mon you can't be mad at your little Bradley"

Casey smiled a little "I don't like jealous guys just so you know"

"I'm not the jealous type except if I love the girl very, very much" He gave her kiss on the cheek "You want to go inside with me?"

She nodded and came out of the car. "Remind me to hurt Mark next time we see him"

Brad wrapped his arm around her shoulders "You read my mind"

Casey laughed, "Hey you know this was our first fight?"

"Really?"

"Yup"

Brad put his hand up for a hi-five "Up top" Casey rolled her eyes and gave him a hi-five. "Oh just so you know my mom is really Italian and she will force you to eat and they will be over all the time"

"You should have told me this before I agreed to spend the rest of my life with you" Casey teased and playfully nudged him. Brad smiled and nudged her in the elbow. Brad rang the doorbell and winked at her as they waited "Was that your 'you screwed yourself' wink?"

"Yup" He answered grinning as he took her hand "I'm sorry I got you pregnant and now you have to marry me"

"Shut up"

The door opened and a woman answered the door. "Bradley"

"Hi mom" Brad said smiling as he gave her a hug "This is Casey Novak my fiancé that I told you about. Casey this is my mom Marie"

"Nice to meet you sweetie" Marie said as she gave a hug to Casey.

"You too"

"Come on in" She said as she moved out of the doorway.

Casey leaned in by Brad "Remind me never to call you Bradley in bed again" She whispered softly.

Brad smiled "You read my mind" He whispered as he led her into the house to meet the rest of his family and her soon to be family.

Mark and Olivia sat in the waiting room in the doctor's office. Mark was reading a magazine and holding Olivia's hand.

"Honey?"

"Hmm" Mark kept reading the magazine.

"Mark?"

"Yea?"

"What's wrong with James?" Olivia asked as she rested her head on his shoulder.

Mark kept focused on the magazine "Puberty"

Olivia grabbed the magazine and threw it on the table in front of them "Talk to me"

Mark took a deep breath "Sorry"

"I'm sorry I just snapped"

"You're pregnant not me don't worry about it"

Olivia smiled and wrapped her arms around his. "What's going on with him?"

"Maybe he is just going through the rebel stages of his life" Mark suggested.

"Did you go through that?"

He nodded "Yea especially after my first adoptive parents died" He answered quietly.

Olivia looked at him and instantly felt bad "Mark I'm sorry honey I don't even think about that, I'm sorry"

"Don't worry about it"

She stroked the back of his hair "How was your rebel thing like?"

"Smoking, drinking, vandalizing property, anything that could have gotten me arrested" He answered. "Did you go through it?"

"Somewhat. I dated a guy that was old enough to be my father when I was 17"

"Eww" Mark teased smiling as he wrapped his arm around her shoulders. Olivia smiled and slapped his knee. Mark laughed and gave her a kiss.

The nurse came out "Mrs. Anderson we're ready for you"

Both got up and went into the room. The nurse left a paper gown on the bed and left the room.

"Strip show" Mark teased as he sat down on the chair across the bed.

"Don't make me make you close your eyes" Olivia threatened as she took off her shirt and threw it to him.

"I don't have any one dollar bills I'm sorry"

Olivia rolled her eyes and took off her jeans "Keep talking Anderson"

Mark laughed and folded her jeans and shirt in his lap "Hey why don't you always get called Mrs. Anderson it sounds cute?"

"I don't want anyone to know I'm married to you" Olivia teased and showed him a huge grin playfully.

"Funny. But I'm serious, you use it at doctor places and stuff why not just change it all since you are Olivia Benson Anderson"

"Because someone needs to keep the Benson name in play" She answered as she put the paper gown on.

"Oh" Mark nodded in understanding "Do you want this baby to have your last name?"

"No, I want my children to have my husbands last name" She answered as she sat down on the bed.

"Are you sure?"

"Positive" She answered as she lay down.

"I love you"

She smiled at him "I love you too"

They got home both extremely happy. Olivia was on Mark's back and he was giving her a piggyback ride from their car to their house.

They came into the house and stopped seeing James and Elizabeth on the couch making out. Olivia slowly got off his back and quietly closed the door.

"Hello Ms. Stabler" Mark spoke up. Both of them got startled and stopped kissing.

Elizabeth wiped her lip and started to blush extremely "Hi"

"How are you?" Mark asked as he sat down on the couch.

"Good" She answered.

"How's your father?"

"He is good" She answered and looked over at Olivia "How's the baby?"

"She is good" Olivia answered with a huge grin as she sat down by Mark.

"You're having a girl?" Elizabeth asked smiling "Congrats"

"Thanks"

"James lets go in the kitchen and let the girls have girl talk," Mark said as he got up.

"I…um" James stuttered knowing he was going to be in trouble.

Mark smiled and grabbed him by the shirt and pulled him up "Excuse us ladies" He dragged James into the kitchen.

Olivia and Elizabeth sat in the living room being quiet awkwardly.

"So how long have you and James been going out?" Olivia asked finding it extremely weird that a 21 year old was dating her 18 year-old son.

"About a year"

She nodded "How's Dickie?"

"Good, he has a girlfriend now" She answered. "But he wont tell me who it is since we are boy and girl twins"

Olivia chuckled "You'll found out when it's important"

Elizabeth smiled and nodded.

James buried his face in his hands "Dad first off I'm sorry"

"James you are grounded, you know you cant have people over when you are grounded" Mark said in a low voice "I don't want to yell at you now since your girlfriend is in the other room."

"I appreciate that but isn't it somewhat uncivil that you are punishing me for just having sex with a girl and I even used a condom c'mon"

"Its not uncivil its called parenting James and don't question me or your mother you understand me?"

James just nodded. They heard the doorbell. Mark rolled his eyes and opened the door.

"Oh no" James mumbled seeing Dickie standing there.

"My sister!" Dickie yelled as he walked past Mark and moved toward James.

James moved back "Ok look man…it just happened"

Olivia and Elizabeth came into the kitchen after hearing noise. Both stopped seeing that Dickie had James pinned to the wall. Mark was just standing there since he knew it was a brother thing.

"Mark!" Olivia yelled looking at Mark why he wasn't doing anything.

Elizabeth pushed Dickie off and stepped in front of James "Go home"

"No way!" Dickie yelled.

"What's going-" Jenny started as she came into the kitchen but stopped seeing Dickie there "Hey D"

"D?" James asked looking at her.

Dickie just looked at her and smiled "Hey Jen"

Everyone looked back and forth at the two and quickly realized what was going on.

"Oh god" Olivia mumbled.

"My sister!" James yelled and moved toward Dickie. Dickie quickly moved back.

"Call it even?" Dickie asked with a small shrug.

James thought for a second "As long as your dad doesn't find out"

"Deal" Dickie agreed as both boys shook on it.

"Ok what just happened here?" Mark asked totally confused. Olivia whispered something to him "I know that. I mean did they just agree that Elliot isn't going to murder our child?"

Everyone shot him a look "What?" He shrugged "Leave me alone, Olivia is having a girl and I really don't care about anything else right now" He rolled his eyes and left the kitchen.

"Dickie and Elizabeth go home please, James up to your room and Jenny I need to speak to you" Olivia quickly took control of the situation. None of the kids said anything and did what they were told.

Jenny sat down at the kitchen table as Olivia did also.

After a while of talking Jenny went up to her room and Olivia came into the living room where Mark was lying on the couch and playing with the twins.

"Daddy lift me up" Mike whined.

Mark lifted him up in the air and gave him a kiss on the cheek. Olivia came over and sat down on Mark's stomach "Ow"

"Hey boys we found that the baby will be a girl," Olivia said as she took Matt into her lap.

"Aw man" Mike complained.

"That's not fair" Matt added.

"We have enough boys in the house" Mark teased as he gave them each a kiss on the head "Go in your room and get ready so we can go play basketball"

The twins nodded and jumped off and ran to their room.

"What happened with Jenny and Dickie?" Mark asked.

"They are just dating, they didn't have sex" Olivia answered. Mark nodded.

"Mind getting off me sweetie?" Mark looked up at her.

"Not at all" She answered and jumped on his stomach again.

Mark groaned, "What was that for?"

"For not helping your son out" Olivia answered and started to slap him on the chest "You jerk!"

"Stop liv" Mark protested as he tried to defend himself "Stop it"

Olivia slapped his chest one last time and stopped "I swear you will get worse if I ever see you not protecting our kids again"

"Ok, I'm sorry jeez" Mark said as he took her hand "Let me get a kiss"

"No, I'm still mad at you" Olivia said as she got up.

"Baby c'mon" He whined.

Olivia walked away "You're sleeping on the couch tonight" She called to him as she went in their room.

Mike and Matt came out of their room with the basketball in Mike's hands "Let's go daddy"

Mark got up and took them by the hand.

"Is mommy going to come with us?" Matt asked.

"No, mommy needs nap time" Mark answered as he led them out of the house knowing it was Olivia's mood swings since she would get mad easily when she was pregnant and then got over it just as quickly.