Morgenstern then resigns from the hospital, and a distraught Peter begins an affair with Elizabeth. They remain together through much of the following two years, although their relationship eventually begins to suffer due to Peter's needing to spend more time attending to Reese. Elizabeth helps him realize that their romance isn't going anywhere, and they end their affair, though they remain close friends and colleagues. Their friendship is troubled, however, when Elizabeth approaches the hospital staff with the idea of a trauma surgical fellowship. Benton withdraws his tentative commitment to Romano's cardiothoracic fellowship (which would be extremely time-consuming) and campaigns for and is granted the trauma fellowship. Elizabeth feels betrayed by Peter and, wishing to stay at County, takes Romano's cardiothoracic fellowship offer.