Arizona walked into the house with Jo and saw Alex and Sofia sitting on the couch eating their cereal. She chuckled as she watched them, not able to decipher who was worse at using a spoon: him or her.

Sofia saw her mother walk through the door and tapped Alex on the shoulder.

"Is mommy," she said.

Alex smiled. "Yes it is. We were wondering where she's been haven't we?"

Sofia nodded her head up and down in agreement.

Arizona walked over and picked the little girl up, giving her a big kiss.

"Hi baby. I'm sorry that you missed me but I'm here now."

Alex wiped the milk dripping down his chin off of his face and stood up.

"Do you want to help Aunt Jo pick up the dishes Sofia?" he asked, as Arizona set her back on the ground.

"Yes I help," she said, helping Jo pick up the bowls and carry them into the kitchen.

"So…there anything I should know about?" Alex asked.

Arizona sat on the couch and took off her jacket. Telling Jo had been easier than she had expected. But then again, Jo was reasonable and could put herself in Arizona's shoes regarding this whole situation. It probably wasn't hard for her to understand why Arizona made the choice that she did. Alex…he wasn't quite so reasonable and Arizona was sure that she was facing an uphill battle.

"We're back together," Arizona said quietly.

Alex sat down next to her.

"I'm sorry, you're going to have to say that again," he said.

Arizona sighed and looked at him. "Callie and I…we're back together."

Alex tensed his jaw and balled up his fists.

"Alex…" Arizona started, noticing the physical signs that Alex was getting upset.

"Why Arizona? Why the hell would you subject yourself to that again?"

"I'm not subjecting myself to anything Alex. We both made mistakes and we've learned from them. It's not going to be like last time."

"How do you know?! How could you possibly know that? I mean…c'mon. You guys have had problems since day one. It's amazing that you stayed together as long as you did. And now you're going to start the cycle all over again? I had to pick up the pieces Arizona. I had to put you back together. I can't stand by and let that happen again. I won't."

"Alex, please try to understand. We're just going to see where it goes. We're not moving in together or getting remarried. We're just dating. You have to trust me on this. I know what I'm doing."

"I'm sorry Arizona but I'm not okay with any of this. You're always welcome in my home, but she's not. Is that understood?"

Arizona looked shocked. Had Alex really just banned Callie from the house?

"Where is this hostility coming from Alex? I thought you and Callie were friends."

"We were. We were friends. But…then you got divorced. And I don't care what anybody says. When something like that happens, you have to take a side. And I took yours Arizona. I have always taken your side. But I won't stand by and watch while you and Callie screw up each other's lives again."

Jo walked out of the kitchen with Sofia in her arms and immediately picked up on the tension between Alex and Arizona.

"Sofia..why don't you run upstairs and pick out what you want to wear today," she said.

Sofia scrambled up the steps and Jo walked over to the two.

"What is going on?" she asked.

"Arizona has lost her freaking mind! That's what's going on!" Alex yelled.

"Alex…what is wrong with you? Why can't you just be supportive? This is a good thing. Our friends are getting back together."

"Yeah, it's freaking fantastic. You two live in a dreamland where you think all of this will magically turn out okay. But I'll tell you what…when it doesn't don't you dare come running to me."

With that he grabbed his jacket and walked out the door, slamming it behind him.

Callie entered the cafeteria and sat down with her salad when she saw Alex sitting by himself in the corner.

"Alex wasn't on the surgery board. What's he doing here?" she thought to herself.

She picked up her plate and walked over to sit down next to him.

"Hey Alex!" she said.

Alex looked over at her and sat up a little straighter, almost squaring his shoulders like he was getting ready to fight.

"Uh..everything okay?" she asked, noticing his defensive stance.

"No actually. Everything's pretty fucked up if you ask me," he said.

"What's going on Alex? Is there anything I can do?"

"Yeah..you can leave her alone."

"What?"

"Arizona. You need to leave her alone."

Callie finally caught up to what was happening. Arizona had told Alex about them getting back together and he was obviously less than pleased.

"Alex..this is really none of your business," she said.

"Like hell it's not!" he yelled, pounding his fist on the table. The people at the surrounding tables turned to see what the ruckus was about before turning back to their meals. Alex flattened his hand on the table and cleared his throat.

"I'm sorry," he muttered. "But this is very much my business. I love her. She's my best friend. And I was the one left to deal with the aftermath of the divorce. Not you, me. You don't how many nights she didn't sleep, how many days she didn't eat, how many days I had to drag her out of bed. She was a wreck. Every fiber of her believed that you guys would make it work. But you didn't. And she's finally herself again Callie. So leave her alone."

"I didn't know Alex. I knew she had trouble with it all but..I-I think we'll be better this time. I really do."

"Well I really wish you knew Callie. Because you thinking it'll be better doesn't cut it for me."

Callie was at a loss. She had no idea Alex would react so violently to her and Arizona getting back together. They were all friends. This should have been a happy event. Yet here Alex was, basically ordering her to leave Arizona alone.

"I'm not going to hurt her Alex. That may not mean much to you, but I won't. We've lost too much already. This was not a decision I came to lightly. Not with Sofia. Not with everything that happened before. Not with everything that is at stake. There are few things in this life that I'm willing to put everything on the line for, but she's one of them. I would love to have your support, but we are doing this with or without it. We let too many people interfere in our relationship before. It won't happen this time. So stand by us or get out of the way."

Alex looked at her, deep concern evident on his face.

"She's my best friend Callie," he said, pleading with her one last time.

"I know," Callie said. "She's my best friend too."

Arizona had just put Sofia down for a nap when Alex gently knocked on the door.

"Can we talk?" he silently mouthed to her, so as not to wake the sleeping girl.

Arizona nodded. She gave Sofia a kiss on the forehead and made sure she was tucked in nice and tight before leaving the room and shutting the door.

"I'm sorry," he blurted out, before she could even turn to face him. "I'm an idiot. A stupid, overbearing idiot. I want you to be happy. I do. But I'm also scared for you. And you're not allowed to hate me for that. I want to protect you. Okay? I'm a brother, so I naturally have protective instincts. And I am protective of you. But..I talked to Callie and I know. I know you guys wouldn't be doing this unless you really thought it was for good this time. So I'm here okay? I'm here and I'm sorry and forgive me. Please. Just..forgive me."

Arizona slowly walked up to Alex. He thought she was about to lay into him but was pleasantly surprised when instead she threw her arms around his neck.

"Thank you for caring about me so much. I forgive you. Of course I forgive you," she whispered.

Alex let out a sigh of relief. "Thank you," he breathed, lightly wrapping his arms around her waist. "Now hurry up and let me go. After the day I've had I need a drink."

Arizona knocked on Callie's door with Sofia in tow. Arizona's days with Sofia were over and it was Callie's turn to have her. Callie opened the door and saw her two favorite girls waiting.

"Mami!" Sofia yelled, running up to Callie to give her a hug.

"Hey princess. How are you?"

"I in a hurry! Mr. Bear missed me!" she squealed, rushing past her mother and up the stairs.

"I guess I'm chopped liver these days," Callie joked.

Arizona smiled. "She prefers her stuffed animals to me sometimes too. Don't take it personally."

"Do you want to come in for a little bit?" Callie asked. "Unless you have somewhere to be of course."

"I'd love to come in Callie," Arizona said, stepping through the door.

"Was she any trouble?" Callie asked, feeling stupid for making small talk.

"Not at all. She never is. I love having her."

Suddenly Callie was in front of Arizona, pressing her lips against hers and pulling her flush against her body. After a few seconds she pulled back, leaving Arizona breathless.

"I'm sorry," she whispered against her lips. "I've been wanting to do that since this morning."

Arizona smiled from ear to ear. "Don't ever apologize for doing something like that," she said, leaning in to gently kiss Callie's lips.

"Go on a date with me," Callie said after Arizona pulled away. "Not right this second obviously but...soon. Go on a date with me."

"You took the words right from my mouth," Arizona said, stealing another kiss. "Yes, Calliope. Yes. I would love to go on a date with you."