what episode do george and callie get married
Callie Torres Callie Torres is introduced as an orthopedic surgery resident with a crush on intern George O'Malley (T.R. Knight). The two start a relationship and Torres moves into Meredith's house (Meredith and Izzie Stevens lived there as well). Uneased at the way their relationship is progressing, O'Malley confronts her, which results in her moving into a hotel. In the aftermath of the breakup, she meets and has a one-night stand with plastic surgeon Mark Sloan (Eric Dane), who becomes her friend. Torres and O'Malley subsequently reconcile, and the two marry in Las Vegas on the spur of the moment. Confused, O'Malley confides to fellow intern Izzie Stevens (Katherine Heigl), about his relationship woes over alcohol, leading to a drunken sexual encounter between the two. Torres remains unaware of his sexual encounter, but becomes increasingly suspicious, and announces her desire to conceive a child. Shortly thereafter, however, she discovers that O'Malley has been unfaithful, ending their marriage. Though her personal life is troubled, Torres thrives professionally when she is appointed as the hospital's Chief Resident. However, she soon begins struggling to cope in the role, and is demoted soon thereafter.
Lexie Grey Lexie continues to harbor romantic feelings for George, oblivious to the fact that he doesn't see her in the same way. Their relationship is a mirror foil of George's previous infatuation with the oblivious Meredith. She prioritizes helping George study over taking part in a surgery with Mark Sloan (Eric Dane), but feels betrayed when George doesn't request that she become one of his interns after passing his exam. Finally realizing that he doesn't feel the same way, Lexie gives up on her feelings for George and the pair's friendship begins to fizzle out. She later begins a flirtation with Mark, and the pair begin an unlikely romantic relationship, though they are forced to keep it a secret when Meredith and Derek warn Mark away from Lexie. Lexie discovers that some of her fellow interns have secretly been performing simple procedures on each other and begins taking part to prove she's hardcore. Sadie Harris (Melissa George) joins the society, and seeking a more daring procedure, suggests removing her appendix. Though Lexie agrees, she quickly finds herself out of her depth, resulting in Meredith and Cristina having to intervene to save Sadie's life. Lexie and the other interns are put on probation. Derek finds Lexie distraught at the day's events, and allows her to move into the attic at his and Meredith's house. Mark comes clean to Derek about his relationship with Lexie, resulting in the two men getting into a fist fight. The pair continue to feud, resulting in Lexie beginning to stress eat until they eventually reconcile. Lexie is delighted when Meredith asks her to be a bridesmaid at her and Derek's wedding, though they eventually give the ceremony to Alex and cancer-stricken Izzie Stevens (Katherine Heigl). Mark decides to purchase a house and invites Lexie to move in with him, however she declines, concerned about how fast their relationship is progressing.