 Cristina refuses to quit, like she thinks Preston has. Finn and Derek refuse to quit on Meredith, who insist that they date her. Izzie won t quit standing out front of Seattle Grace, waiting for the time she feels is right to see Dr. Webber. Mark won t quit on giving up on Addison, who now realizes her marriage to Derek is over. And Alex wishes she would quit picking him as her intern in the OB-GYN department.