ADDI: I don't understand. You told me at christmas Meredith was just a fling. Now you're back with her?

Addison's words stung Meredith and she felt her body tremble. Derek wouldn't, couldn't have said that, right? RIGHT? She questioned herself worriedly.

Derek feels a rage building inside him as he realizes what Addison is trying to do. It was pretty obvious to him that she must have realized Meredith was in the room. He stands up furiously.

DER: yelling What the hell are you trying to achieve!? Get. The. Hell. Out. Of. My. Office.

Realizing she'd gone too far, and trying to muster as much dignity as she could, Addison stood up quickly. Pushing back her chair, she turned on her heel and headed out of the room. She was careful not to throw a second glance back at Derek, who was livid, hands clenched into fists at his sides.

-----

Addison walked into her office and leaned back against her door, immediately regretting her pettiness. All she'd wanted to do was carry out a little revenge. She wanted to make either of them feel the way she was feeling right now. She wasn't blind, she knew Derek didn't love her anymore, but now she feared he would hate her. Hate her as much as she hated herself right now.

-----

Derek stands there opened mouth. He could barely comprehend what had just happened. His thoughts turn to Meredith, not wanting to imagine what she must thinking right now. He spins around as he sees her emerging from under the desk out of the corner of his eye.

DER: talking a million miles a minute Meredith! Oh my god! I'm so sorry! I tried to get rid of her, I –

MER: Derek we need –

DER: cutting her off You know I would never say that right? Meredith she's just trying to come between us. I can't believe she would behave that way I –

MER: louder Derek –

DER: No please, I need to explain. At Christmas I told her that I loved you, that you weren't a fling. You have to believe me Meredith –

MER: impatiently Look, Derek –

DER: I love you Meredith, you know that right? You know I wouldn't lie to you? You –

MER: louder still Derek! I –

DER: Meri, I love y–

MER: yelling DEREK! SHUT THE HELL UP!

He looks at her and stops mid sentence, waiting for her attack. Frustrated, Meredith grabs him, and pushes her lips fiercely into his. At first he's shocked. He'd expected her to yell, to scream, to throw things at him. He'd expected anything but this. Meredith stands on tip toes, deepening the kiss. Finally she pulls away, holding his face in her hands.

MER: I know.

DER: almost not believing You do?

MER: I do.

DER: So what she said?

MER: It doesn't matter to me, Derek. You're the one I trust. Do you really think I'm that naïve? That I'd believe the words of your bitter ex-wife over you?

Derek sighs, relieved, and sits back in his chair. Meredith walks over to the office door and looks back at Derek.

MER: grinning See this?

She points at the door lock.

MER: This is called a lock.

She demonstrates locking and unlocking the door several times.

MER: As the same suggests, it's for locking the door.

Derek looks at her and shakes his head.

DER: You made your point.

Satisfied, Meredith happily strolls back over to Derek and takes a seat in his lap.

MER: whining Now can we finally please get some lunch?

Derek looks at her incredulously.

DER: You are seriously still thinking about food? Seriously?