Disclaimer: I don't own it.

Thanks for all of the reviews and the encouragement to keep going! I've been looking for a storyline to be centered on Kaitlyn and here it is.

"Put on some clothes. You leave. You come talk to me." Addison ordered each of them. Derek followed her into the hallway. He was mad and yelling at Addison.

"How can you be so calm? I'm going to kill him. If she gets pregnant, I'm going to kill him."

"Get in here." Addison said as she pulled him in the bedroom. "First of all, I'm not calm, I'm giving her a second to get dressed. Second, killing him isn't going to help anything. Third, it was her decision to bring him here and violate her grounding, so I'm angry with Kaitlyn."

"What if he pressured her into this, Kaitlyn doesn't do things like that."

"Derek, she's a teenager. I'm upset too, but maybe you should stay here with Grace and let me talk to Kaitlyn." They heard footsteps walking down the hallway. Addison gave the baby to Derek and followed. She was standing in the living room when Kaitlyn came back from letting the boy out.

"Would you like to tell me what was going on?" Addison began her lecture.

"I was spending time with my boyfriend." Kaitlyn decided to just be honest and tell her everything so the lecture would end faster.

"Boyfriend?" Addison was surprised.

"Yes."

"Why did you bring him here?" Addison kept questioning her hoping to figure out why the girl who used to be afraid to break the rules has become a rebel.

"I haven't seen him a lot in the last few weeks. I thought you wouldn't be home until 10." Kaitlyn desperately wanted this to end.

"Why are you sneaking around? You were almost done being grounded. You couldn't have waited a few days. I was fighting for you. I wanted you to be done with that. I was planning on taking you out somewhere fun."

"I didn't think I'd get caught."

"That's not the point of being grounded." Kaitlyn didn't say anything. Addison decided to start discussing the hard topic. "Are you having sex?"

"Yes. It's my decision, not yours." Kaitlyn answered but this is exactly what she didn't want to talk about.

"I'm not trying to make up your mind. I just want to have a conversation with you." Addison tried to not intimidate her so Kaitlyn would just talk to her openly.

"I'm not going to get pregnant. I live with a baby. I know what it's like and I do not want that. Trust me."

"I'm not just worried about you getting pregnant. I think it's time we talked about having safe sex."

"I'm on birth control and we use condoms." Kaitlyn regretted what she just said.

"I'm glad you are being safe. Really, but where did you get birth control?" Addison asked her, upset that she's been too busy to notice what was going with Kaitlyn.

"I went to the doctor. This really isn't any of your business. I'm only telling you because I don't want to be lectured." Kaitlyn answered her, trying to think about how to end the conversation quickest.

"It is my business. You are my child, I need to make sure you're safe."

"You're not…" Kaitlyn began to use their favorite line for arguments, but Addison cut her off.

"Quit the 'you're not my mother' stuff. I care about you. You live with me. I am your legal guardian. I know I'm not your mother, but I'm what you have for a mom right now."

"Well maybe I'll go live with my dad, then you can't control my life." As Kaitlyn said that, she knew that was a bad idea, but Addison would never let her leave.

"That's fine. Pack up what you want. Derek will drive you over there." Addison said, giving up. She was out of ideas and Kaitlyn moving in with Mark might be the perfect thing.

"You're giving up on me quickly." Kaitlyn accused, hurt that it seemed like Addison didn't want her there anymore.

"I'm not giving up on you. I know you want to go live with your dad because you think there are no rules there. Also he's your father, if you want to live with him you can. I'm not stopping you from having a relationship with him."

"Fine." Kaitlyn started storming up the stairs.

"You don't get to be mad at me. I'm letting you do what you want." She slammed her door shut. Addison went in to see Derek.

"She's moving in with Mark." Addison informed him.

"Add, don't you think kicking her out is a little extreme?" Derek was surprised Addison would make Kaitlyn leave.

"I'm not kicking her out. She asked to live with him. She thinks he has no rules."

"She's going to get pregnant." Derek warned.

"She's not. We did talk about that. She's a smart girl. She sees how hard Grace is. She's on birth control and uses condoms." Addison realized she maybe shouldn't have brought that up.

"She's having sex?"

"Derek, really what did you think they were doing?"

"You can't let her live with Mark. You have to keep her here. She's going to turn into him." Derek begged her. He wanted to keep what little control they had over Kaitlyn.

"Chill out. She's sixteen. She's trying to rebel but she is a smart girl. I give her 2 weeks and she'll be back." Addison let him in on her plan.

"Why do you think that?"

"Mark's trying to prove he's a good father. He's going to set some rules. My bet is when it comes to boys, he's going to be a lot stricter than I am. I'm going to call Mark, then you need to drive her over there." She went into the bathroom in her bedroom so Kaitlyn couldn't overhear her.

"Hey what's up?"

"Missing someone?" Addison asked.

"Who?" Mark was confused.

"Kaitlyn?"

"She told me she had to study with a friend at school and she'd call when she was done." Mark thought that he had everything under control.

"Well, school's been closed for a few hours and that is not part of the rules of being grounded. We found her here. She's been sneaking around with a boy." Addison held the phone away after saying that, knowing what was coming next.

"WHAT?"

"She has a boyfriend. Derek and I caught them having sex."

"Who is he? I'm going to kill him." Mark asked angry at whoever did this to her.

"Why don't either of you see that Kaitlyn is the one at fault here." Addison said.

"It takes two." Mark argued.

"Exactly. Anyway, I had a long talk with her and she decided she's moving in with you. She doesn't think you'll have any rules."

"There will be rules. Number one, no boys at all ever."

"Well, that's good but you really need to be strict. You need to keep her grounded and pretty much supervised at all times to make sure she's not sneaking around. She goes to school, she comes home, she does homework."

"I'm taking away her cell phone while she's home too." Mark didn't even want her talking to this boy.

"Oh that's a good one."

"Are you up to something?"

"No, helping you see how to have control of your house. Derek's going to bring her over soon. Be in control."

"Don't worry."

"How's Lily?"

"She's already asleep." Mark answered proud that finally he was doing something right as a father.

"Good."

"I told you I have everything under control."

"Goodnight."

"Goodnight Addison."

Next afternoon…Mark picked Kaitlyn up from school and took her back to his apartment. There was a woman waiting for them inside. Kaitlyn was annoyed that he was going to have a date while she was there.

"This is Rachel. She's a nurse I've been seeing casually. She's going to stay here for the evening to make sure you're following the rules. I have to go back to work." Mark said introducing Rachel to Kaitlyn.

"I can't believe you got me a babysitter." Kaitlyn said surprised as she ran into her room and slammed the door shut.

"Remember, no phone, no internet except for homework, no leaving, and do your homework!" He yelled through the door. "Thanks for staying here. We're just trying to teach her a lesson."

Addison sat down at dinner with Lily. Lily seemed really sad.

"What's wrong Lily?" Addison asked.

"I miss Kaity." Lily responded while picking at her food.

"Me too. She'll be back soon."

"Where is she?" Lily asked.

"She's living with Daddy right now." Addison told her a little afraid that Lily was going to say she wanted to go too.

"Why does she want to live there? Our room is boring and Daddy can't make dinner." Lily was confused.

"Kaitlyn just wanted a little change." Addison responded wondering how many more questions there were going to be.

"Can we see Kaitlyn tomorrow?"

"Maybe." Addison said, wondering that too.

A few days later. Mark called Kaitlyn to the kitchen.

"I made you dinner." Mark to her when she came in.

"What did you make?" Kaitlyn asked skeptical of his cooking.

"Chicken and potatoes." He said proudly.

"Can I eat in my room?" Kaitlyn hoped he wouldn't care so she could eat her stash of snacks rather than the questionable food.

"That works. This girl I met is coming over." He told her

"Do you have to?" Kaitlyn was mad that he brought girls home to their apartment.

"Well, I wouldn't bring her here if I could trust you to leave you alone."

"I don't need to be watched. I'm not a little kid." She said as she stormed off and slammed her door.

The next week… Kaitlyn came into the kitchen to get breakfast and there was a new girl in Mark's shirt in the kitchen.

"Who are you?" The woman asked Kaitlyn.

"Ughh." Kaitlyn stormed out mad that there was yet another girlfriend and she had no one to talk to. Mark kept her cell phone in his bedroom and he had the internet turned off. Kaitlyn thought that living here would have been easy, but she was hating it.

More days went by but the Shepherd household still hadn't heard from Kaitlyn. The house was feeling quiet and empty. Mark was bringing Lily home from school so that he and Addison could talk about what to do with Kaitlyn. They came in the front door followed by Kaitlyn. Addison looked surprised.

"She wants to talk to you," Mark said, "I'm going to take Lily into the playroom for now." They left.

"What's up?" Addison asked Kaitlyn.

"Can I sit down with you?" Kaitln asked hesitant. She didn't know how Addison really felt about her leaving.

"Of course." Addison responded smiling. "You know you always belong here whether or not you are currently living here."

"I'm sorry. I should have listened to you and I shouldn't have been sneaking around." Kaitlyn was trying to make up with her.

"Thank you for apologizing." Addison appreciated that Kaitlyn knew what she did wrong.

"Can I come home?" Kaitlyn asked.

"Yes." Addison smiled happy that her plan had worked. "Why do you want to come home?"

"He has too many rules. No phone, no internet. And he's been having his girlfriends babysit me. I do not need to be babysat. I'm not allowed to talk to any boys or see any boys. I don't like his girlfriends being around. And he cannot cook." Addison laughed when she heard that last part.

"Lily's been complaining about that too. Maybe we should get your dad cooking lessons." Kaitlyn nodded agreeing with her. "You can move back in, but there will be rules and you do need to follow them. You're going to have a few weeks of a kind of probation. You're allowed to have your phone and internet. You can stop being grounded and see your friends. I want to know where you are and who you are with at all times. You are free to do something outside of the house on Friday evening and Saturday. For now you'll come right home after school on weekdays, but I will consider you having a friend over if you need to study or don't have much work."

"I really will follow the rules. I'm sorry about before. I need a mom!" Kaitlyn was working on convincing Addison that she wouldn't be difficult this time. "I love my dad, but I don't want to live there."

"Can you be open with me this time? I want to know what's going on with you. Chances are I'll be excited for you and not angry if you would just tell me things."

"Sure. What do you want to know?" Kaitlyn asked, so happy to be back.

"First, what's the boy's name?" Addison asked excited that she was getting to know Kaitlyn again.

"Will."

"How long has he been your boyfriend?"

"Around 6 months." Kaitlyn responded. Addison was shocked but tried to not look it because she wanted Kaitlyn to keep telling her things.

"Why didn't you tell us?"

"I was afraid to."

"Tell me! I wanted to be excited for you when you had your first boyfriend and first kiss and all of that."

"I'll let you meet him if you're nice." Kaitlyn said happy that Addison was excited with her.

"I'll be nice. Your dad and Derek though…."