"Blood Drive" is the eighteenth episode of the fifth season of the American comedy television series The Office, and the 90th overall episode of the series. It originally aired on NBC in the United States on March 5, 2009. In the episode, a lonely Michael strikes up a pleasant conversation with a woman while giving blood, but passes out before he can learn her name. He holds a Valentine's Day singles party at the Dunder Mifflin office with the hopes of meeting her. Meanwhile, Jim and Pam go on an awkward double date with Phyllis and Bob Vance.