Grey's Anatomy Episode Stills: "Invest in Love"

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Promotional photos from this week's episode of Grey's Anatomy, "Invest in Love," show the gang in a festive mood. Or are they? Arizona is under a lot of pressure to save a patient.

Yes, that's always the case for a doctor. But one of this patient's parents has a donation of $25 million Seattle Grace may be able to garner. You can imagine how the Chief reacts.

Arizona, along with girlfriend Callie, is front and center in many of the photos below, as are Mark and Lexie. What a cute couple they make. What do you think they're celebrating? 

Click to enlarge the images below and tell us what you think...

Arizona Picture
The Rundown
Lexie and Jackson
Mexie HEAT
Arizallie
Oh, Yang
Interested Parties
Party on Callie!
Embattled
'Zona
Callie Partying
An Arizona Pic
Mark is King
Mexie Lovin'
Jackson Pic
Lark Love!
Party Down!

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.

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Grey's Anatomy Quotes

Arizona: Oh my God! I mean, I understand why you're into her. She's hot. Wait, she likes you?
Nathan: What? I mean, I'm going to try not to be offended at that.
Arizona: No, no, no. It's just that Derek was, Derek was epic for her. They were the great love story. I mean, that girl's heart beat for Derek Shepherd. It just, it never occurred to me that she would ever be with anyone else. He was perfect. He was everything. That man turned her world. It, I spooked you. Don't be spooked.

MEREDITH: "You don't get to call me a whore. When I met you, I thought I had found the person that I was going to spend the rest of my life with. I was done! All the boys and all the bars and all the obvious daddy issues, who cares? I was done. You left me. You chose Addison. I'm all glued back together now. I make no apologies for how I chose to repair what you broke. You don't get to call me a whore."
DEREK: "This thing with us is finished. It's over."
MEREDITH: "Finally."
DEREK: "Yeah, it's done."
MEREDITH: "It is done."