<P> This leads to a rift in the marriage . Trudy decides to stay at her parents' house during the Cuban Missile Crisis, and Pete refuses to go with her, stating that if he is going to die, he wants to die in Manhattan . </P> <P> Pete and his mother are unaware that Pete has already fathered a child with his co-worker, Peggy Olson (portrayed by Elisabeth Moss). Pete initially met Peggy on her first day as Don Draper's new secretary, in March 1960 . A lower middle class Catholic from Brooklyn, Peggy tells Pete that she has just graduated from Miss Deaver's Secretarial School . Pete makes rude comments about her dowdy appearance, for which Draper scolds him . Later that night, however, after his bachelor party, Pete shows up at Peggy's apartment drunk . Despite his offensive remarks earlier that day, the two sleep together . Months later, Peggy and Pete again have a sexual encounter on Pete's office couch, early in the morning before the other employees arrive . Though Peggy begins to arrive early for work regularly, the two have no further sexual liaisons . During the Season 1 finale, it is revealed that Peggy--who has put on a considerable amount of weight over the course of the season--is pregnant with Pete's child . She gives birth to a boy . </P> <P> Early in Season 2, Peter meets Susie (portrayed by Sarah Wright) after a casting call for Playtex, and they talk in the elevator . Much to Pete's surprise, she lives with her mother, but that doesn't stop them from sleeping together . During the Season 2 finale, when everyone in the office has left for the day, Pete asks Peggy to come sit down with him . Pete tells Peggy he thinks she is "perfect", and then confesses that he is in love with her and wishes he had married her . This declaration prompts Peggy to finally admit that she had his baby and gave it up for adoption two years before . After Peggy reveals this, Pete sits in shock . Pete is last seen sitting alone in his dark office, holding a rifle on his lap . It is the same rifle he bought on store credit in Season 1, when he returned a ceramic chip - and - dip he and Trudy received as a wedding gift . </P> <P> At the start of Season 3, which takes place about six months later, Pete and Trudy seem much closer: he immediately calls her when he discovers he is to be promoted, and there is no mention of adoption . They seem like a very happy couple dancing the Charleston at Roger Sterling's garden party, and Harry Crane's wife is jealous of them . When Trudy goes out of town weeks later, though, Pete feels very lonely and coerces his neighbor's young German au pair into sleeping with him; actor Vincent Kartheiser portrayed this as rape, though he said it was more ambiguous in the script . The man she works for comes over to confront Pete in their apartment . When Trudy kisses Pete after returning home, he is noticeably distraught, and he later tells Trudy, "I don't want you to go away anymore without me ." </P>

Pete campbell finds out about peggy's baby