CRISTINA: "There you are. I've been looking everywhere for you."
PRESTON: "What is it?"
CRISTINA: "I need to find this man's leg. The chief is going to kick me out of the program if I don't. I cannot go back to Los Angeles. It's sunny there. Every. Day."
PRESTON: [smiles]
CRISTINA: "What? I need you to help me find the leg! Aren't boyfriends supposed to help in situations like this?"
PRESTON: "When we're on duty, I can't be your boyfriend."
CRISTINA: "Okay, fine. So, when we're on duty, I can have sex with someone else?"
PRESTON: [pauses] "Dr. Yang... I'm walking away now."