Derek: Hey ah, Chief, you haven't heard from Addison have you? She's not answering any phones.
Richard: Actually she needed the day off. Something about finding another woman's panties in the pocket of your tux.
Derek: Ah, that's not how I wanted her to find out.
Richard: You don't leave another women's panties in you tux unless you want her to find them. Look, I know a thing or two about affairs. I even know a thing or two about affairs with women named Grey.
Derek: It's not an affair. I was gonna tell her, Addison, I was gonna tell her today.
Richard: Give her some space, give her some time.
Derek: No. That's not it. No. I gotta tell her today. When something's over, it's just gotta be over. Meredith she's--she's not an affair.