Title: When It All Just Fits

Author: Sara and Lizzie

Rating: R

Disclaimer: Obviously, its not ours.

Summary: Summer, scared at the intensity of her relationship with Seth, left him four years ago. Since then she's been all over Europe. Finally, four years later, she wants to return home to Seth. Funny when she does, he's engaged. Not like that's going to stop Summer.

"All these feelings cloud up my reason." –Matchbox Twenty

It had been hours since she had gotten back to Newport. Summer and Marissa had spent the whole day lying on the beach, with headphones blaring, ignoring the pressing, heavy issues that weren't going to go away.

It wasn't until almost eight o'clock that they climbed into Marissa's car and returned to the Cohen residence. While Marissa parked the car, Summed strolled through the front door and into the kitchen wearing only her flip-flops and her bikini.

Cohen was dumping margarita mix and tequila into the blender, but stopped when he saw her. His eyes took in her body and Summer watched as his jaw slowly dropped.

She waited for him to finally meet her eyes. She raised her eyebrows and smiled. He smiled back sheepishly.

Summer grinned, totally self-satisfied. Score? Summer, 1, Molly 0.

They both looked up to see Marissa and Ryan dragging large cardboard boxes to the pool. Summer grinned, and Ryan winked at her. It was their tradition.

Her mind left her to return to the night they graduated from Harbor High. Instead of joining the mass of parties, the four of them threw blankets and pillows next to the pool and slept out side.

Seth marveled at the misty look in Summer's eyes as she gazed toward the pool. Ryan and Marissa were busy spreading blankets and pillows. Seth wasn't an idiot. He knew they didn't like Molly, and he knew this was a tactic to take them all back to the good old days. Could he help that it was working?

Summer's gaze turned to him, and he opened his mouth like he might say something, but instead, he turned on the blender, and let the sound drown his thoughts out.

Summer knew she just leave, but she couldn't pass up the opportunity. She sauntered over toward Seth and reached for the cabinet directly in front of him. She pretended to stumble, and wrapped an arm around his stomach for "support". She snaked a hand under his shirt and traced her fingers across his abdomen. She dipped a finger under the waistband of his jeans, and grinned when heard him suck in a breath.

He turned around, only to find his face a mere two inches from hers. "Summer..." He started. She moved her lips a fraction of an inch toward his, and he met her there.

Seth erased Molly from his mind for the second time in 12 hours and concentrated solely on kissing his ex girlfriend.

Down the hall, Sandy Cohen had finished dressing for the third boring benefit he would be attending this week. He looked at his watch and realized that they hadn't bothered to tell Seth where they were going.

He sauntered into the kitchen, only to be struck by Seth and Summer making out. Sandy turned around, and made a lot of obvious noise outside the kitchen, waited for a while, and then re-entered, to see his son and the woman he was sure would be his daughter in law standing clear across the room from each other.

He smiled. "Seth, we're leaving. Children's league benefit tonight."

Seth smiled. "Have fun with that one. Dad."

"Ryan and Marissa are here?" Sandy asked.

Seth and Summer nodded. Sandy grinned. "Probably a good thing." Summer blushed. He smiled and left the room. She turned on her heel and fled to the pool.

Seth shook his head, dazed.

Summer stood up from the mess of blankets an hour later and stretched. "I'm hungry." She announced. "Food run?"

Marissa reached into the Chanel purse sitting next to her and tossed her keys to Ryan. "You two go." She said.

Summer jumped up. Ryan stood dutifully, understanding what this was. The big switch. Summer needed answers only he could give her, and Seth needed advice only the seemingly sane best friend of the fireball who had returned could dish out.

No sooner than the car doors had shut, Summer dug in. "Ok Chino. Talk to me."

"What do you wanna know Sum?"

"Who is this girl? Where'd she come from, how'd they meet, what's she like, who does she associate with and why the hell did he pick her?"

Ryan took a deep breath. He knew she was going to ask this and practically memorized the answers to the anticipated questions.

"Molly Flynn. She comes from Irish money, conservative but Democratic parents, they met some political rally, she is always a as big of a bitch as she was this morning, for some reason she's got a huge stick up her ass. She's quick, she's efficient and she's completely heartless. She runs around L.A. and Seattle with boring preppy girls."

Summer raised her eyebrows. "Not bad Chino. Your getting damn good at this."

"I try."

"So why her?"

"Honestly Summer?"

"Give it to me good."

"She's not you. She's pretty perfect Summer. Went to Loyola. Totally Catholic. She's sweet to people with more power than her, she's a business woman. She's make a great wife of a Senator or governor or whatever Seth is going to be before he's president."

"So it's a political thing?"

"Not entirely. Summer, when you left, he went through phases. First he was convinced you'd be back. When it became clear you wouldn't be, he got upset, which turned to seriously down, which turned to anger, which led to this bitterness that prompted him to get with as many girls as he could."

"And then?"

"And then he found Molly. And they dated for a while. And then he asked her to marry him."

"And now?"

"And now here you are. And I have a feeling that this will get bad before it ever gets good."

While Ryan and Summer were having that conversation, Seth was digging into Marissa.

"What the hell is going on here?"

Marissa smiled. When Ryan had been gone that awful year in high school, she and Seth had become basically brother and sister. And she knew everything he would ask her.

"She woke up Seth. She loves you."

"Why now?"

"Her did made her chose. Come home or stay put."

"Did she know? About Molly?"

"Yes."

"And she still came?"

"She loves you."

"What do you and Ryan think?"

"It's your life Seth."

"But what do you think?"

Marissa sighed. "Truth?"

"Hit me with it."

"Summer is my best friend. And I want to see her happy. Molly is a bitch. I want as little contact with her as possible. Ryan isn't starting the Molly Flynn fan club either. But we both want you to make the decision."

"So it really does have to be all up to me?"

"To be brutally honest, yes. For once in your only child, sheltered, privileged life, no one is going to give you a map Seth. You gotta do this one yourself." She smiled and squeezed his hand.

He sighed. "It's amazing that two days ago, I was totally sure of where I was going, and now, all because of one girl, everything is a mess."

Marissa smiled again. "Love is beyond reason Seth."

A/N: This is like, our longest chapter in awhile, so we want tons of reveiws. The more you review the more we'll write. Any suggestions/critcisms/comments? We wanna hear 'em.