A/N: So some of you have been asking about Parker, and this chapter will touch on him, but it will be a few chapters before he actually shows up. I hope you like this chapter!

When the four arrived at the park, they looked around for a spot. It was very sunny that day, and they wanted to find a spot with shade.

"Over there." Christine said, pointing to a table with an umbrella.

"That's a perfect spot." Brennan said.

They got there and sat their items on the table and began undressing into their bathing suit. Booth was the first to be undressed because he only has to take hos shit off. Brennan was helping Kasey change, and Christine was next to be undressed. She had on a blue tankini that brought out her eyes. She grabbed for the sun tan lotion and began applying. Once Kasey was out of her clothes and into her bathing suit, she walked over to her dad.

"Do you like my swimmy suit, Daddy?" She asked for the hundredth time.

She chuckled. "Yeah, princess. Just as much as when you asked me in the car."

Brennan smiled at her daughter and began undressing herself. She was wearing a dark blue one piece that showed off her hips nicely.

Booth smiled at her. "You look great in that." He said, putting sun screen on Kasey.

She smiled back. "I'm glad you like it."

That first stop at the water park was the kiddy pool. Kasey had never swum in a pool before, so Booth had to hold her, even though it was only two feet deep.

"Don't let go, Daddy." She said, clinging to his leg.

"It's okay, sweetheart. You can just walk normally. It's like a bath. I'll be right here if you need me." He said prying her off of his leg and holding her hands.

"Okay..." She said reluctantly.

She released his hands and began walking. She slowly began running and jumped up and down.

"I'm doing it, Daddy!" She said, splashing up and down.

"I see, princess. Good job!" He said, sitting down in the shallow water and grabbing onto her. Brennan and Christine watched, smiling at the two.

After a while in the kiddie pool, the four moved on to the wave pool. Kasey had to wear a life jacket due to her size. Christine was holding onto her and playing in the 4 feet end. Brennan and Booth were slightly deeper in the five feet end, watching the two. Brennan was in a piggy back ride position in Booth's back, and he was spinning in circles, making Brennan giggle.

"It feels like they were always ours." She said, looking at their girls.

He smiled and said, "I know how you feel."

She sighed. "I love this; having a family. I haven't been a part of one in so long, it's just… nice." She admitted.

He turned her in his lap, having her wrap her legs around his front. "This is the happiest I've ever been, Bones, but I need to talk to you about something."

"What is it?" She asked.

"Well, see I have Parker next weekend, and I want to know what you want to do." He said.

"What do you mean?" She asked.

"Well, I want him to meet the girls; his sisters. It's going to be a big change for him, and I want us to do this together."

She nodded. "Parker is like family to me. I love him, Booth, and he is just as important to me as Christine and Kasey. We're family now, and I want him to be happy. Just tell me what you want to do and I'll do it."

He smiled. "You're amazing."

She kissed him and said, "Just doing what you did for me. Neither Christine, nor Kasey was yours in the beginning. But you loved them anyway, and you made sure that they became yours."

He smiled. "It wasn't much of a sacrifice. They're both sweet and beautiful girls. Who wouldn't want to be a part of their lives?"

Brennan's smiled faded and she looked down. "I can think of a few people."

Booth lifted her chin with his thumb and forefinger. "Let's not think about that. Moving forward. That's what we should think about." He said.

She sighed. "You're correct."

After a moment of silence, Brennan spoke again. "Move in with me/"

"What?" Booth said, shocked.

"You already spend all of your time at me apartment. Move in with us permanently." She said.

"Bones, I want to, and I will eventually, but I have to spend some time with Parker, and explain everything to him before I do anything. He deserves a chance to get used to the idea of a new family." He said.

Brennan nodded. "I understand."

Booth kissed her forehead. "I want to live with you permanently, I promise. I just think that we should let things settle before we do anything too drastic. We have a lot to think about in the next few weeks. Like registering Christine for school, and signing up Kasey for daycare. Let's just take a breath and enjoy the day." He said.

"Yes, let's enjoy the day." She said, suddenly dunking him into the water.

When he came up for air he said, "Oh, you're gonna get it now!"

Brennan swam away as quickly as she could, but Booth grabbed her foot and pulled her back. She squealed when he began tickling her mercilessly. "Booth! I'm sorry! OH! - Please stop! Oh God, Booth I give up!" She said breathlessly.

He finally stopped and she sunk her tired body into his. She kissed his neck and said, "I think the tickled monster wouldn't like a taste of him own medicine." With that, she swam over to the girls and whispered something in their ears. Booth looked at them suspiciously and Brennan yelled, "Now!"

Before he knew what was happening, all three of his girls were attacking him with tickles that made him cringe.

"Hey! This isn't fair! You guys ambushed me!" He yelled, trying to swim away.

"Daddy's very ticklish!" Kasey said, laughing.

"Okay, Okay! I give up! Mercy!" He yelled.

They all stopped and Brennan looked at Booth with a smug look. "I told you so."

"Yeah Yeah." He mumbled.

At 6:30, they four were all packed up and ready to go.

"Dis was fun, Mommy! I hope we do it again!" Kasey said sitting on her mother's hip.

Brennan smiled. "Well maybe we can make it here again before the summer is over." She said.

"Thanks for taking us here, Mom." Christine said. "I haven't been to a water park since I was a kid, and I had an awesome time."

"I also had fun. It's amazing how much more fun you have when you're with people that you love." She said.

Booth smiled. "Let's go home. We have a big day tomorrow."

A/N: So this chapter is a little awkward, but it was kind of hard to write. I'll have the next chapter up soon. I promise! Please review! XOXO- Mary