Title: Sooner Or Later

Paring: Addek…minor usual couples.

Rating: PG-13 to NC-17

Spoilers: Season 3 but AU

---

Addison and Derek sat a Joe's bar the night they had filled their divorce papers. It was official, in about three months, they wouldn't be married anymore. They wouldn't be Derek and Addison anymore. Neither knew how to feel about that, neither even knew what it was not being Derek and Addison.

"So…it's weird isn't it?" She asked, being the first who talked.

"Yeah, I know this marriage is over but I don't want it to be." He admitted looking at her.

"But you have Meredith now, and I'll find someone eventually…I hope anyway." She replied shrugging. Truly, she didn't think she'd find someone like the Derek she fell in love with. He was different; he was the one-her soul mate.

"I guess. Is it weird of me not wanting anyone to be with you…ever?" Addison would always be his, not matter what.

"Is it weird of me to hate Meredith?"

"You don't hate people Addie, you just don't like them." He explained before taking a sip of his drink.

"Well I highly dislike her then." She told him also taking a sip of her Martini.

"As is your right. You have to know that I'll dislike anyone you're going to date, especially if it's Mark." He admitted.

"Oh gosh, we shouldn't be doing this. We shouldn't friendly talk, we should be fighting, screaming at each other. I should be mad at you for cheating on me that night and you should be mad I stayed with Mark when you left. We just shouldn't sit here and I shouldn't be loving you with all my heart." She said her eyes wet with tears. She hated that feeling.

"And I shouldn't be deeply in love with you either. I should be home to Meredith, loving her."

At that they both just sighed. It wasn't easy; maybe they made a wrong decision?

For an unexplainable reason, after 5 vodka shots each, they both could be found in her hotel room kissing on top of her bed, taking each others clothes out of the way. What they were doing at the moment was wrong.

---

The next morning, Addison woke up first feeling at little bit dizzy. She had a killer headache! She looked around her and saw Derek sleeping next to her on the bed. They had slept together. They weren't supposed to sleep together; their divorce was going to be finalized in a few months. Gosh, why didn't she feel bad?! He was with Meredith now, it was all wrong-oh so wrong.

She took the bed sheet to cover her body while she walked towards the bathroom. There, she looked up at herself in the mirror, she had remaining make up from the previous day, her hair were a mess and her eyes were almost pooping out of her head.

She took a long warm shower and got clothed for the day ahead. After doing her hair and make up she went bad to the bedroom, Derek was still sleeping on her bed. She sat next to him and gently shook his shoulder.

"Huuh what?" HE asked grumpily shoving a pillow over his head.

"Derek wake up you need to get ready for work meaning you have to go back to the trailer.

"Addison?" Derek replied looking around the too bright for his liking bedroom.

"Yes."

"We sleep together."

"Obviously" She replied sarcastically.

"Why doesn't it…"

"…feel wrong?" She continued for him smiling.

"Yeah"

"I dunno, but it really should. You're dating Meredith now."

"Yeah I know. You know, maybe I could date you both." He replied smugly.

"An affair? NO WAY!" Addison responded firmly looking at him like he was crazy.

"It wouldn't be an affair! We're married."

"Still, it's wrong and I don't wanna be the bad girl again."

"Why would you be the bad girl? We fool around until the divorce is finalized, and then we go apart and move on with our lives."

She sighed, why was she tempted to accept!?

"Under two conditions Derek. First, I get to tell Callie and second, we do this extra secretly."

"You get to tell Callie? So, can I tell Preston?"

"NO! Preston is dating Christina, aka Meredith's best friend who's aka your girlfriend or whatever."

"Right. But you have to know that TECHNICALLY I'm having an affair with Meredith…since you and I are married."

"Whatever! You don't get to call Preston. Oh and also third rule. I get to choose where, when and how." She told him strictly.

"How?!"

"Yes. And also, what we are doing is wrong. Really wrong and we both have to understand that."

"Okay."

"Okay."

TBC…