<Li> Jay Paulson as Adam Whitman (1 episode) </Li> <Li> Myra Turley as Katherine Olson (1 episode) </Li> <P> Don Draper has married his secretary Megan Calvet, who throws a surprise birthday party for Don and their co-workers . Don is embarrassed by the party and Megan serenading him in front of his co-workers . Megan (who has been promoted to copywriter) meanwhile struggles with Don's growing detachment with work, as he is constantly having Megan come in late and leave early to the agency, and her own unfulfilled dream of being an actress . Don's detachment alienates Peggy, who is being made to train Megan, and Bert, who feels that Don has gone "on love leave", not caring about his job or turning in quality work . </P> <P> Feeling her chances at work have been undercut by Don's detachment, the couple have a fight while touring a Howard Johnson's hotel . Don leaves Megan behind in a huff when she tells him that she's come to find the advertising industry hollow and superficial . Megan manages to hitch a ride back to their new apartment, where they fight and ultimately reconcile . </P>

Who does don draper marry in season 5