Meredith. What are you doing? You're gonna have to re-scrub. ...
Meredith: What are you doing? You're gonna have to re-scrub.
Derek: I'm not ready.
Meredith: Yes you are.
Derek: I need to know that at least I have you, no matter what happens in there, i need to know. I need you to say yes. I need to know.
Meredith: I can't say yes. Not if agreeing to be with you forever will make it ok if Izzie dies. I can't say yes. I love you, and you can do this. You can do this. I know you can.