"You didn't know? I thought that is why you and Derek went to the on call room and why you were crying. I thought you knew about the kiss." George says. "I thought you knew." George says. "I'm an idiot." He says.

She takes the kids and leaves the hospital angry and upset.

12 hours earlier.

"Cooper, come one can you eat your breakfast. We have to go very soon." Meredith says to him in the morning. "Come on put away your train." She says taking it away from him.

"No!" He says slamming his hands on his highchair.

"Come on Cooper. You can have your train after you eat."

"No Mumma! I want my train now!"

"Cooper!"

Cooper's face defined with the detailing of wrinkles and anger from him screwing his face up. She knew what was coming. His temper tantrum. He was managing to have tantrums at least twice a week and this week was his 3rd. The terrible twos. Oh the joys of toddlers and parenting.

With his reddened face and his fisted hands he begins crying. Wailing. Screaming the house down causing an ear ache.

"Cooper! Stop!" She says screaming over his yelling.

With no luck he still cries and cries. They had to leave for work in 5 minutes.

Derek walks into the kitchen.

"What is it now?"

"He wants his trains, but he isn't eating his breakfast."

"Meredith you know how much he loves his trains."

"I do." She says standing up. "But he needs to eat first before he plays."

"Meredith just give him his train back." He says with a raised voice.

She turns to see Kaylee looking between the two of them.

"Derek." She says in a whisper. "He needs to learn. He is too preoccupied with toys to even eat and when he does start eating we have to leave the house. He needs breakfast Derek. He has all day to play with his trains."

Cooper was still wailing.

"Meredith! You're acting like a two year old. Your worse than him."

Yeah she could tell he was pissed off. "Derek I am acting like a mother." She says turning to take him from the highchair and putting him on the floor. "Cooper you have to stop crying. This is silly."

"Meredith he is two years old. He doesn't know any better. Let him play."

"Derek we aren't doing this now." She says handing him his bottle. "Kaylee go get your shoes on. We're late."

Kaylee leaves the room in a hurry.

Derek grumbles again.

"What is it?"

"No one put the dishwasher on last night."

"And that was your job." She says. "We're late."

He doesn't say anything back. He storms out of the kitchen. Meredith follows behind him. Holding Cooper's hand and the crèche bag. He had seemed to settle down. He was still whimpering. She grabbed the train she took from him and carried it.

She put Cooper in his seat and put his shoes on his feet. He was still crying.

"You can have it back when you finish crying." She tells him.

Derek already had the car started and was waiting impatiently for Meredith to get in the car. His knuckles were turning white from his grip on the steering wheel. Kaylee was silent in the backseat and Meredith slid into her seat without making eye contact with Derek.

Arriving at the hospital Meredith took the kids. Cooper had settled down and was all hugs and kisses. She didn't say a word to Derek as she left for the crèche.

"Mummy?"

"What is it baby girl?"

"Are you alright?"

"It's just going to be a long day. I can feel it."

…

"Okay ladies and gentlemen this is Nick Hanscomb." Dr Sloan presents.

"Hi."

"Nick was lucky enough to have me remove a large carotid body tumour from his neck. That I was able to get clean boundaries is pretty darn impressive even for me."

"Congratulations." Alex says.

"Don't interrupt. Now, despite the fact that it was wildly successful surgery, we had to dissect out deep lymph nodes in his neck. There is now only a delicate flap of skin between his carotid artery and the outside world. That said, what am I worried about?"

"I'd think given the friability of the skin, that there's a great possibility the artery could blow." Cristina says.

"Right."

"Don't worry, I've heard this before." Nick says.

"If that happens, whoever's in the room, I don't care if it's a doctor, a nurse, an orderly, your job is to stop the bleeding, then page me, in that order. Are we clear? Any questions?"

"They look scared."

"They're professionals. A healthy level of fear is encouraged."

"OK, then. If I do fie, it will have been lovely meeting you all."

"See? The patient is confident, you should be confident. That's it."

…

Reporting down to the ambulance bay after Sloan's meeting, they were greeted with an ambulance.

"What do we have?"

"Jacob Nolston, 47, status post his double bypass surgery two weeks ago, febrile with tenderness in his surgical incisions. We got a ten car pileup, mind taking him?"

"You got it."

"I need a gurney."

"I'll page Hahn." Izzie and Cristina say at the same time.

"Sounds like we all agree. Get him inside and flip for it."

"You're in good hands."

"Thank you."

Cristina and Izzie started bickering. Meredith couldn't handle it. Today of all days. She noticed the incoming ambulance and how fast it was going, a runaway train. She knew it wasn't slowing.

"I think you should move!" She says. But no reply is met. "Move!" She yells again.

They push the gurney closer to the doors as they watch the incoming ambulance crash into the one just leaving. Causing a mass destruction. A pile up. Which was ironic because the ambulance that was crashed into was heading to a pile up.

Meredith ran out to the flipped ambulance. Callie following close behind.

"Ray? Ray, can you hear me?" She asks the two paramedics hanging upside down.

"Stan." Ray says. "Stan."

"Oh, my god." Callie says noticing the damage.

"Stan? Open your eyes, man." Stan's eyes open."Oh, man. Don't scare me like that."

"Let's get you guys out of there." Meredith says.

"No! Stop! Stop. Don't touch anything. Don't touch anything until Fire stabilises. Doors aren't going to budge."

"Torres! I need you help here! Get the driver!" Bailey yells out.

"On my way! All, right, just page somebody to help you and keep them talking. You got this?"

"Yeah."

"Don't leave. Don't." Stan pleads.

"Ok." She says. "Somebody page the Chief."

…

Derek was getting ready for his surgery with Nelson. He came by to grab his scrub cap and grab something to eat.

"Are you alright?"

"Addison. I am fine."

"During that surgery. You did not look like your normal self."

"Just a tough morning." He says throwing his rubbish in the bin. "What's up?"

"Two ambulances crashed in the bay. They have wiped all elective surgeries off the board." She says. "And Nelson needs you."

"So you're the messenger girl now?"

"No. I came to find you and talk to you, hopefully as a friend because you had a rough morning."

"Addie, I'm fine."

"Yeah, I'm not so convinced." She says.

"I have a patient to get to." He says trying to move past her. But he bumps into her. Close to her body. He looks down at her lips. He leans in and is met with her lips. With their lips touching for a few seconds.

He realises what he is doing and he pulls away.

"This was not meant to happen." He says leaving as quickly as he can.

…

"How's it going in there, fellas?" Richard asks.

"I think…. I think that they better get us out of here."

"Yeah. If we're putting it to a vote, I think we better get out of here fast."

"I'm afraid 'keep still' is the best we can do for now. We don't want to make anything worse. We'll get you some pain meds as soon as possible."

"Sir?" Stan asks.

"Call me Richard."

"Richard, can you tell me… My legs, are they broken?"

"I can't see your legs?"

"How come?"

"Well, your body is trapped in the door. You can't feel…"

"I can't."

"You can't feel that?"

"I can't fell anything."

"His ears are bleeding!"

"I see, Ray."

"Can you get my wife? She works here. She's an x-ray tech."

"You bet."

"Stan, don't die on me. You hear me? I'll be so pissed."

"I'm doing my best, man."

Richard and Meredith move away from the rig, away from earshot.

"Get Stan's wife here now."

"What do we… How do we…?"

"We don't."

"We have a whole hospital…"

"The moment we move him, he's going to bleed out. All the medicine in the world won't save him. His wife has to get here soon if she wants to see her husband alive." He says. "Now move."

She ran as fast as she could. Today of all days had to be the sad one with the wife whose husband is dying. After her being pissed off at Derek this morning she knew she shouldn't be so mad at him. She found Sara. She had to now break the news to her. She led her down to the ambulance bay to see the wreckage and the army of rescue people.

"I've never seen her before?"

"What?"

"I've never seen her before. I've worked in this hospital all this time. Before today, she was a complete stranger to me."

"It happens. It's a big hospital." Richard tells her.

"I've never met her before, and yet I'm the person who handed her the worst day of her life. In her story, that' who I am. That's who I'll always be."

Richard placed a hand on his daughters shoulder. "That's the job."

"That's the job. I know." She says feeling tears form in her eyes.

"Look at me. This day… This day you feel helpless. This day makes all those other days when you fight to save a life and lose, this day makes you grateful you have a chance to do anything at all. You take it in."

He keeps a hand on her shoulder as the wife is carried away crying. Meredith couldn't help but feel today's toll creeping up on her and it was only 12pm. She bows her head so she can't see the wife and feel even more useless. Richard holds her shoulder until the wife leaves.

"It's time."

Richard explains to the paramedics what is going to happen before they pull the rig apart. They start to rip into the rig when they stop. Stan dies after saving his best mates life. Meredith felt her heart breaking. Especially when Ray starts getting angry and sweaty and refusing treatment.

She moves inside the ambulance, through broken glass and over Stan's body to save Ray's life. She stays inside the rig to save his life.

"We're about to start the pericadiocentesis, but with the position of the body, the blood won't be pooled to the heart…"

"I'd still use the subxiphoid rather than the parasternal."

"Right. Ok. Meredith, did you hear that?"

"Yeah, is the kit ready yet?"

"I'm getting it read for you now."

"How you doing, Ray?"

"You've got to be careful with this technique. If you aim the needle incorrectly, you could nick the very thin-walled right atrium."

"It could cause a cardiac rupture."

"Rupture, tension pneumothorax. There's about six different ways she could kill him."

"Are they talking about me?" Ray asks.

"No. Don't listen to them, Ray." She says turning away from Ray. "Dr Hahn? Shut up."

Meredith just focuses her attention on Ray and feeling somewhat proud at yelling at Dr Hahn.

"Tell me something Dr Grey?"

"What do you want to know about?"

"Yourself."

"Well I am married to a doctor at this hospital. Dr Shepherd. And I have two kids."

"What are their names?"

"Kaylee and Cooper. Kaylee is 6. Cooper is 2. He is going through his terrible twos at this moment. Very painful."

"Well they have to learn some way."

"And that some way is too scream the house down because he doesn't get his way. Something I wish we could skip." She tells him smiling. Trying to keep him distracted.

Being handed an 18 gauge needle Ray is not ready. He's scared.

"Are you scared Dr Grey?"

"All the time Ray. As a mother. A wife. As a doctor."

"Okay. Just do it. Don't count just…" He says as she pricks the needle into his heart to relieve the pressure and the blood.

"We're getting you out of here right now." She tells him climbing out from the rig.

"You're bleeding." Richard says taking her elbow.

"It's Ray's blood."

"I can see that." He says leading her away. "It could use a couple of stitches. But you stayed calm and focused and efficient in a very stressful situation. That's impressive."

"I was scared." She admits.

"You did it anyway. Like I said, impressive." He says to his daughter smiling.

…

Meredith walked the OR floor. She had been stitched up and was waiting on news about Ray. When she passed Sara.

"Excuse me. You're…. you're the one who came to get me. Who told me about Stan."

"Yes."

"Is Ray…?"

"He's in surgery."

"Ok. I have to go. I have to get out of here, so… Look, can you tell him that I'm sorry? I can't stay here? I just can't come back right now?"

"Ray want me to tell you that he's sorry too. He's sorry he couldn't save Stan. He wanted me to tell you that in case he didn't make it."

"You think he's not going to make it?"

"I hope he makes it. But you won't be here, so…"

"My husband is dead. Somewhere in this hospital. How am I supposed to stay here?"

"I don't know. I don't know. But I know if Ray makes it, he's gonna wake up and he's gonna have no one. And you're gonna go home and you're gonna have…"

"No one."

"I think it's better to have someone. Even if it hurts. Even if it's the most painful thing you have to do. Even if it's the most painful thing you're ever had to do. I think it's better to have someone." She tells Sara.

…

Derek was in the scrub room, scrubbing out. The patient was gone and the doctors were gone. He was in the scrub room because he didn't want to go and face Meredith after what happened. He was feeling guilty. He heard the door open.

"Derek…"

"Addison. Just leave. I can't face you after the kiss. It wasn't meant to happen. I have a wife. I am married. I am not supposed to be going around and kissing my ex. Who do you think I am? I am not a cheater. I made a vow it my wife to love her for the rest of my life. I kiss her not you Addison."

George opens the scrub room door but seems who is in there. The two of them are in a heated discussion. He is stunned at what he hears about kissing other people other than his wife. Kissing people who are his ex. The woman he was going to marry. He shut the door and left without a trace.

"Derek…"

"Addison no. Not now." He says. "I can't look at you."

He dried his hands and left her in the scrub room. Walking the floor he found a distressed and upset Meredith. She was only close by.

"Meredith?" He asks. She had a bandage on her arm. "Are you… What's wrong?"

Her head was bowed. She looked up with tears in her eyes.

"Tell me what's wrong." He asks.

He grabs her arm and leads her to an on call room. Locking the door for privacy so they can talk. He does not know what is wrong. He doesn't know if she knows about the kiss or if it is something totally irrelevant.

He sits down beside her and grabs her hands in his. She doesn't pull away which is a good sign. He just sits with her and waits until she is ready to talk.

"Just everything today… One of the guys in the ambulance he died. He left his wife." She says upset. "All I could think about was what if that was us. What if it was our normal day and we got into an accident on the way to work. We had been so pissed off at each other that if one of us died we couldn't tell each other that we loved one another one last time." She says wiping the tears away. "We have to say I love you at every chance we get because one day it could be our last time we say. We have to not fight over stupid things." She says crying.

"So today is a hard day?"

She nods her head and falls into Derek's shoulder.

"Yeah it is a hard day. Everything is just taking a toll on us. From home, to tantrums, to 36 hour shifts, to dying patients." He says. "I feel the same way." He says placing a kiss on her forehead.

"Some days I am so scared that something is going to happen. To us… Or the kids." She says. "Every waking minute I am petrified of something happening."

"Just cry. You will feel better."

Meredith sobs become known to Derek. Her body heaves as she cries. He is just her shoulder to lean on. He is being her support.

"The reason you are scared. You are a mother. Every mother is scared. Since you held Kaylee in your arms. Or the moment you found out you were having a baby you are scared that if I do one thing wrong this could be the end. But sometimes you can't tell if it is the end. So you have to be scared. Being scared is a humane thing. You shouldn't care what others think. Because in hindsight everyone is scared."

"Are you?"

"All the time." He tells her.

He lies her down on the bed and he lies with her. Her head resting on his chest as he cries.

He really hated seeing her cry.

"Richard was proud of the way I acted in the ambulance bay. He said I was calm and effective in a stressful situation."

"He meant it. I can tell Richard meant to say those words." He says. "He is proud of you."

Meredith traced her finger over Derek's chest.

"I'm his daughter."

"I know you are. He is a proud father."

"Are you a proud father?" She asks looking at him.

"Of course I am Mer." He says. "The moment I was told we were having a child I have been proud. The moment I felt the kicks. Each day when your stomach grew and the day they entered the world I have been a proud father. I don't regret anything that has happened. They are kids, when they fight with us and when they cry I know they are learning and growing up. I am proud that they realise their mistakes and they don't do it next time."

"We could have one more kid to be proud of very soon." She says in a quiet voice.

"We could." He agrees kissing her forehead. "I'm sorry for yelling at you this morning."

"I'm sorry for yelling back."

Derek had a lot more he wanted to say but he kept his mouth shut. If she didn't know then it wouldn't come up in discussion.

Meredith positioned herself, lying on Derek's chest. They smiled at each other before their lips met softly but hungrily. Derek's hands run up and down her back. His hands linger on the hem of her shirt and he pulled it over her head and threw it to the floor.

"Let's make a baby." She whispers to him.

…

Late that afternoon Derek and her left the on call room. Once they left they parted with a kiss.

"I'll see you tonight." She tells him.

"I shouldn't be here too much later."

"Do you want me to come and pick you up?"

"It's fine. I'll get a lift with Mark." He says kissing her once more.

"Okay. I love you." She says leaving him.

She changed from her scrubs and dressed, gathering her personal belongings and going up to the crèche.

"Hi Meredith."

"Hi Jenna." She says. "How were my two today?"

"Kaylee was an angel. Cooper wanted to be alone for the day and play with his trains. He didn't eat much. He just grazed but that's about it."

"Okay then. His going through his tantrums at the moment. He had one this morning about his trains and his food."

"That seems to happen a lot." She says. "I'll go get their bag for you."

"Thanks Jenna."

"Mummy." She hears as two arms wrap around her legs.

"Hey baby girl. You ready to go home?"

"Yes mummy."

"Let's get your brother then."

They find Cooper playing with his trains. Meredith kneels beside him.

"Hey Coopie."

He looks up at her and then back down at his train then back to her.

"It's alright sweetie. I'm not going to take it from you. It's time to go home."

He stands up and holds his arms up to be carried. She lifts him up and kisses his cheek.

"I love you Coopie."

He smiles at her and kisses her back. Jenna comes back with the bag and they leave the crèche. They run into George. He had been avoiding Meredith for most of the day. She had barely seen her intern all day.

"Hi Uncle George."

"Hi Kay. You all heading home?"

"Yeah we are. It's been a big day."

"Yeah it has with patients galore and ambulance crashes and things like that." He says. "Are you alright? I saw you crying earlier."

"Just today has been a bad day."

"Yeah it has. I'm surprised you are in a good mood after Derek and Addison kissing. I thought you would have been pissed at him."

"Wait. What? Derek kissed Addison." She asks stunned.

"You didn't know? I thought that is why you and him went to the on call room and why you were crying. I thought you knew about the kiss." George says. "I thought you knew." George says. "I'm an idiot." He says.

She takes the kids and leaves the hospital angry and upset. She gets them in the car and holds the steering wheel until her knuckles turn white.

"Mummy?" Kaylee asks.

Meredith doesn't answer her. She starts the car and then leaves the hospital. Buying take out and heading home. To wonder why he didn't tell her. To wonder why the hell he kissed Addison. To wonder why he seduced her in the on call room.

She got the kids to bed and she sat in bed crying. He had done it again.

He had done it again and she felt helpless.

First chapter of part 2. I told you it would go out with a bang and a very big one in their relationship.

The aftermath of this whole situation will happen in the next chapter and more and more things get in the way of their relationship. Its does gonna be a bumpy ride, that is what I can say.

I'll have the next instalment up soon and let me know your thoughts on what is to come for them.