"The Sleepover"

Note: I don't own the O.C, but there a few characters coming in a little while that I do :) A few chapters away still though.
This chapter has more sex, but not just R/M. Should I rate this differently that PG-13? Let me know if you think so... Please R&R, thanks!

Ryan and Marissa laid in bed together, both on their backs staring at the ceiling, after they had sex. Ryan held Marissa's hand as she talked about the shopping she had to do that day.

"You're still coming with me, right?" she asked. "You're not too tired now, are you?"

He just smiled and leaned over and kissed Marissa on the nose.

"Good," she said. "Let's go."

She started to get up, but Ryan pulled her back onto the bed and against his chest. "Lie down with me for a little while," he smiled sleepily.

"But, but," she said giggling. He was grabbing her around her ribs and stomach to keep her there, but he was tickling her. "Stop!" she squealed, laughing harder.

"Stay," he said, finally overpowering her. He pulled her toward him, this time her back was against his chest.

"This is pretty comfy," she said, surrendering.

Ryan pulled the blanket over both of them, and after a few moments, they were both asleep.

"A slumber party?!" Summer thought Marissa must be joking. They hadn't had a slumber party since they were 13 years old. "With who? You and I are basically the only girls we hang out with."

"You and me . . and Ryan and Seth," Marissa wanted to make Summer's last night in Newport fun. "Sandy and Kirsten are gonna be gone til after midnight, and Theresa's in Chino for the weekend and said we could use the poolhouse."

"You're serious, Coop," Summer realized she wasn't joking.

"Yeah, it'll be so much fun."

Summer shrugged her shoulders and laughed. "Okay!"

Marissa and Summer got the Cohen's house right as the sun was setting. They had backpacks full of their clothes and toiletries and they were giggling like little girls again. Seth answered the front door.

"Welcome, ladies, to Seth's magical sleepover party," he invited them in.

In the living room, Ryan was playing a video game and paused it when the girls came in.

"Hey," he said.

"Hi," Marissa said and picked up a game controller. "You ready to have your butt kicked?"

They played video games for a while, taking turns, until everyone got tired of hearing Summer whine about how the game was cheating against her. The whole night was for her after all, so they decided to eat. In the kitchen, Seth microwaved frozen finger foods and they ate together, talking and laughing, but avoiding the topic of Summer's departure. When they finished eating and goofing off, Seth suggested they go for a swim.

"Ugh, no," Summer said. "I don't want to get wet."

"C'mon, Summer," Marissa pleaded, "Let's go get in the pool."

"You know you want to," Seth teased.

"She did bring her swimsuit," Marissa agreed, "We both did."

Summer figured it was her last night, what the hell. "Okay, but anybody who splashes me is dead," she said and looked at Seth. "You hear me, Cohen?"

They all laughed and headed out to the pool.

After they swam for a while (Summer mostly stood at the shallow end and leaned against the stairs), Ryan and Marissa ended up in the deep end holding each other.

"I can't believe Sum's actually leaving," Marissa said looking down into the water.

"I know," Ryan said sympathetically, "I'm sorry."

Marissa jumped up and wrapped her legs around Ryan so that he was holding her.

"Let's not think about it," she said as she leaned down and kissed him. He kissed her back as he held her up in the water, hoping that she would be able to deal with Summer leaving.

At the other end of the pool, Seth finally gave up on trying to get Summer into the water to have some fun.

"Fine, party pooper," he said. "See if I sleep next to you at the slumber party," he joked.

She looked at him sadly; she was going to miss him so much she couldn't even smile at his jokes. "Come here, Cohen," she said as she pulled him toward her. She put her arms around his neck and he wrapped his around her waist and they kissed, and kissed, and kissed, and kissed. They didn't stop until Marissa and Ryan were standing on the deck of the pool and Ryan cleared his throat.

"We, uh, we're going inside," he motioned at the poolhouse.

"Okay," Seth said. "We'll be there in a minute."

Once Ryan and Marissa were inside, they continued their long, passionate kiss.

"I'll never kiss anyone like this but you," Seth said, completely caught up in the moment.

Once they were all inside, they talked and joked and goofed around until they all fell asleep.

In the middle of the night, Summer woke Seth up and took his hand.

"Come with me," she said and guided him out to the pool again.

"Let's go skinny-dipping," she whispered, even though no one was around to hear.

Seth looked at her in shock. "Really?" he asked, still not believing his own ears.

Summer smiled and nodded as she pursed her lips.

"Okay, yeah," Seth happily agreed. "Wait, let me go make sure my parents aren't home yet."

He wandered around the side of the house and came back with a big goofy grin on his face. "All systems go," he said in a cocky manner.

Summer stripped down to just her panties, while Seth stared in amazement.

"This is so cool," he said gawking at her.

"Ugh! You, too, lover boy!" she said realizing he was still dressed.

"Okay, okay," he said as he peeled off his t-shirt and shorts and stood in front of Summer in just his boxers.

Summer grabbed her panties. "On the count of three," she said.

They counted to three, took off their underwear, smiled at each other, and jumped into the pool. This time, Summer didn't care about getting wet. She dove under the water and grabbed Seth, she splashed at him and laughed when he splashed back.

After they played for a while, Summer quieted down and pressed her body up against Seth's. He held her and they kissed, and when Summer told Seth she wanted to have sex one more time before she left, Seth jumped out of the pool and disappeared into the house within a matter of seconds. And another few seconds later, he reappeared with a condom and another big goofy grin. They made love in the pool, and both of them wished they never had to be apart, but they knew it was only a matter of a few more hours before they would be separated by the entire country.