GASP! An update! I'm really sorry guys, it just became hard for me to write anything during the third season when everything was so damn depressing. So let's go back to the days when Meredith wasn't an idiot and Derek wasn't even aware she had a half sister, let alone know enough to be flirting with her. I'm sorry if it sucks, it'll take me a few days to get back into the swing of writing again, but never fear, I won't leave you guys hanging again. After seeing how many times this story has been read and all of the wonderful reviews that have been left, I owe it to you guys to finish this story.

"Absolutely not, " Meredith hissed at Derek as they walked down the hospital corridor.

"Meredith, it's dinner, " Derek tried, but he was cut off with a shake of her head.

" That woman hates me. No way am I having dinner with her again, " She said firmly.

" She doesn't know you, Meri. She can't hate you, " Derek protested.

" I said no, Derek. If you want to have dinner with them, that's fine, but I'm not going."

Derek sighed as she picked up her pace and left him behind.

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For once in his life, Derek couldn't figure out why he didn't just say no. Sitting at a table across from his soon to be ex-wife, his boss, and his boss' wife, he really wished he would have just said he had plans. Adele Webber had been going on all night about what a wonderful couple he and Addison made. The woman most certainly wasn't subtle. Richard had been shooting apologetic glances at him ever since Adele had started in.

" So, Derek, how's Meredith doing with Ellis being in the hospital, " Richard tried to change the subject and remind his wife that Derek was in fact dating another woman.

" As well as can be expected I suppose. I think she's just trying to cope with it the best way she knows how, " Derek replied, grateful for anything that steered the topic of him and Addison, even if it meant discussing his girlfriend in front of his ex-wife.

" I'm sure the poor dear is devastated. After all, she and her mother certainly had a lot in common, " Adele said sweetly.

" From what she's told me, Meredith and her mother couldn't be more different. They don't exactly get along, " Derek answered, pleased that Adele seemed to be warming up to Meredith.

" That's a shame. I mean it seems they would have a lot to talk about, considering they both have had or are having affairs with married men, " Adele smirked at Derek.

Total silence went through the dining room. Derek spared a glance at Richard, who had turned pale.

" Adele, can I see you in the kitchen, " Richard asked tightly.

" Richard, honey, that would be rude. We have guests to attend too, " His wife smiled across the table at Addison.

" Now, Adele, " Richard demanded as he pushed his chair back from the table and threw his napkin across his plate.

" Excuse us, you two, " Adele said as she followed him out of the room.

" I wonder what that was all about, " Derek said aloud.

Addison quirked a brow at him from across the table.

" You mean you don't know?"

" Know what, " He asked, not really interested in whatever she had to say.

" Richard and Ellis Grey had an affair many years ago, " Addison spoke slowly, honestly surprised he didn't know about this.

Suddenly Adele Webber's dislike of Meredith became a lot clearer to him. She thought Meredith was like Ellis, but wait a second….

" Meredith doesn't know, " He responded to Addison.

" And just how do you know she doesn't want you to think she's like her mother, so she hasn't said anything about it, " Addison said, not unkindly.

" Because Meredith isn't deceitful. Besides, she never knew why her father just walked out on her."

" I can't believe I'm saying this, but you should tell her Derek, before someone like Adele does. It'll be better coming from you, " Addison suggested.

Derek sighed, wondering how on earth he was going to tell his girlfriend that her mom had once had an affair with their boss. That affair had been why her father had left.