when does derek propose to meredith in grey's anatomy
Elevator Love Letter (Grey's Anatomy) In this episode, Derek Shepherd (Patrick Dempsey) proposes to the show's title character Meredith Grey (Ellen Pompeo) while Izzie Stevens (Katherine Heigl) undergoes surgery for cancer with Alex Karev (Justin Chambers) feeling guilty for her condition. Cristina Yang (Sandra Oh) deals with the PTSD of her boyfriend and fellow surgeon Owen Hunt (Kevin McKidd). The episode received favorable reviews with critics calling it a payoff for Meredith and Derek fans.