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(Takes place just where the last chapter left off)

Callie and Addison were still standing in the hallway.

"Speaking of him, he's right over there."

"Yeah. I see him. I'm dreading this." Derek walked over to them.

"Are you ready yet?"

"Almost." Mark walked up to all of them.

"Addison."

"We need to talk." Derek was concerned.

"Addison."

"We need to do it sometime. Now's as good as ever."

"You have to be careful."

"I know. Just let me."

"Okay."

"Let's go in another room." She started walking away. Derek grabbed Mark's arm.

"She has high blood pressure. She's just been put on bed rest. Her blood pressure can't get any higher or it will be dangerous for her and the baby. Just don't let her get too worked up." Mark walked away following Addison. They went into an empty room.

"What are we talking about now?"

"We're done Mark."

"Care to elaborate."

"You're never home, you never take care of the girls, you don't do anything around the house, you're not there for me. I know that you've been cheating on me. I'm just done. Either you leave or I will. I'll take the girls, but we need to separate."

"Okay."

"Just like that."

"I want you to be happy. I want you to have what you want."

"What I want is a father for my three girls, who wants to be a father, who is there for me and the kids."

"Obviously that's not me. Try Derek. You two are very close lately."

"We should talk about Derek."

"What did you do?"

"One night, months ago, Derek and I had a moment."

"What kind of moment?"

"He's the father of the baby."

"What? I can't believe you did that to me."

"I did that to you? That was one night! You've been cheating for months and months. Don't think I didn't know. Every night you worked late. I know that's what you were doing. Don't even try to deny it. I have witnesses."

"That's so different."

"It's not."

"It didn't involve a baby."

"Well, I did what I thought was best in February. Things have apparently changed since then."

"Well, that's obvious. Is that why you've been spending every minute with Derek?"

"He doesn't know."

"What have you been doing then?"

"Trying to take care of myself, taking care of the girls. Derek picks up your slack. He's there to talk when I need him, unlike you."

"What do you want me to say?"

"I don't want to tell you what to do or to say anymore. Just leave. Go be with your women. Or I'll leave. You decide."

"I'll leave. I already found an apartment. I guess I can put the deposit down now that I know I don't need room for the girls."

"Fine. Come home sometime this evening so we can tell the girls."

"What are you going to tell the girls?"

"I haven't figured that out yet."

"I'll be there. Do we have boxes at home?"

"I think there are some. Why?"

"To pack my stuff."

"Okay. I'm going to go home. I'm getting the girls on the way, so whenever you're ready."

"I can't believe you did that."

"What?"

"What? You kept the father of your baby a secret. You cheated on me. You made me think it was mine. You used me."

"Well, it very well could have been yours. And I haven't cheated on you since you thought we were having a baby. I believe that's when your cheating started? We're both to blame. I just want it over. See you at home." She left.

Addison went to school to get the girls from camp. Lily was in a very good mood. She kept playing with her friends.

"Lily we have to go now."

"Why?"

"Because I don't feel well and I have to go home and put my feet up."

"Are you sick?"

"Kind of."

"Do you have a fever?"

"No."

"What do you have?"

"High blood pressure. Can we talk about it at home?"

"Okay."

"Let's go."

"Hold on." Allison stepped in to help.

"Lily." Lily looked right at her. "Aunt Addie said that it's time to leave. You need to go home with her now."

"Okay."

"She might not be in camp tomorrow."

"Okay."

"I'm working."

"Oh that's right. Then she'll probably come with Kaitlyn."

"Good. Tomorrow is a pool day."

At home that evening…Addison was resting on the couch as Derek cleaned up from dinner. The girls were in and out playing. Mark came in the front door.

"Hey."

"Hi."

"Ready to tell them?"

"I think so. Will you get them?"

"Yeah." He called the girls downstairs. "Sit on the couch with Aunt Addie and me. We have something to tell you." They sat next to Addison and Mark sat across from them on the coffee table. He looked at Addison. "Aunt Addie and I are ending our relationship, meaning we won't be together anymore." Lily started crying.

"We won't be together?"

"Addie and I aren't going to live together." Kaitlyn just stared out. She looked like she was going to cry.

"No, no, no. I want Aunt Addie." She held onto Addison and climbed into her lap. Derek walked in the room and back out when he realized what they were doing.

"You girls and I are going to live here and Daddy is going to move out. It doesn't mean you won't get to see him. You can go visit him and he'll come visit you."

"I'll be ten minutes down the street, a phone call away."

"Okay."

"Are you okay, Kaity?"

"Yeah. I thought we were going to be the perfect family. A mom, dad, kids, and a baby. I wasn't sure you guys would make it."

"You have better than a perfect family. You have all of us here and Uncle Derek and lots of other people who live too far away to see everyday. Just because we don't live in the same house doesn't mean we aren't still a family."

"Addie and I will always love each other and care about each other even though we will be apart. We will always love you girls more than anything in the world. We just do better apart than together." Kaitlyn smiled.

"You actually do. I liked it the best when we were in New York. You guys just aren't meant for each other."

"Thanks Kaitlyn."

"I mean….you said…"

"We know what you mean and it's true."

"When are you leaving?"

"Tonight."

"Oh."

"How about you pick a day and a time that will be your time with your Dad every week?"

"Okay. I don't know when."

"That's okay. We can pick a time later. After you've had a chance to digest everything."

"Is that all?"

"Yup." Lily hugged Mark.

"I'll miss you daddy."

"Me too baby."

"On a happier note, you're going to have a baby sister."

"We are?"

"It's a girl?"

"Yup. Go in the kitchen and see what Uncle Derek has for dessert."

"Okay." The girls left the room.

"Derek's here? You didn't wait long."

"He cooked us dinner so I could stay off my feet. He's probably going to be doing stuff for me a lot so get used to it."

"I don't care. I was just asking because I didn't know he was here."

"You do care."

"I'm hurt. But I secretly want you to end up with Derek. You're Addison and Derek. I was the best man at your wedding. You belong together. We don't."

"I'm really happy you aren't making this an absolutely horrible experience. Can I ask you a question?"

"Anything."

"Why did't you want to be involved with the baby? Tonight was the first time since the beginning that you touched my belly."

"I was in denial. Every other time that happened it didn't end well because of me and I didn't want to do it to you, but I did anyway. I also felt kind of guilty."

"Why?"

"You and Derek tried for years to have a baby. You deserved a baby. You wanted a baby. You and I weren't trying and it happened. It felt wrong. I want you and Derek back together. He's better for you. Just be happy." She kissed him.

"Thanks. And you. Go back to your old ways. You were much easier to make fun of and happier."

"Gee thanks."

"But not when you have the girls. No one night stands around the girls."

"I'm going to pack."

"There should be boxes in the basement."

"Okay."

After the girls were asleep, Addison made Derek sit with her in the living room.

"We need to talk."

"I'm sorry if I'm being too enthusiastic about the break up. I just want you to be happy. I can go home."

"No don't. That's not what we need to talk about."

"You know how I pretty much told you that the baby is Mark's and Mark will raise it?"

"Yeah."

"Well, I kind of had a paternity test."

"And?"

"It's yours." He looked shocked. They sat in silence. "Derek?"

"I'm going to have a baby. I'm going to be a father."

"Yes. Can you please tell me how you feel about?"

"I couldn't be happier. I can't wait. I can't believe it's actually happening. I wanted you to have the paternity test. I wanted it to be mine."

"I wanted it to be yours so badly."

"I'm going to have a daughter. From now on I'm going to be with you every moment of every day. Anything you want, I'll do it. I'm here for good babe." He kissed her and put a hand on her belly. "We're having a baby." They both smiled.

"We are." They kissed.