During her internship, Cristina has an on - off relationship with the chief of cardiothoracic surgery Preston Burke (Isaiah Washington) that leads to an accidental pregnancy. Yang schedules an abortion without telling him about the pregnancy due to Burke 's behavior towards their lack of relationship status. However, Yang experiences an ectopic pregnancy and Burke discovers the pregnancy after Yang collapses from a burst fallopian tube. Burke and Yang begin a relationship in the aftermath of her miscarriage. After Burke is shot in the arm and develops a hand tremor, Yang helps him cover it up by developing a covert partnership wherein she performs most of his surgeries. Yang initially denies involvement during a confrontation, but then confesses everything to Richard Webber (James Pickens, Jr.), the chief of surgery. Yang 's actions jeopardize Burke 's chances of becoming chief, which he sees as a huge betrayal. After a short breakup, Yang breaks the silence and Burke proposes marriage, which Yang accepts after eight days of hesitation. Burke calls off the wedding, leaving Yang at the altar. She goes on her honeymoon to Hawaii with Meredith to recover, returning to discover that Burke has disappeared from her life and transferred to a different hospital.
who is the father of christina yangs baby
Preston Burke