<P> Tony is renowned for his juvenile sense of humor and "commitment phobias" while Ziva is characterized as "a tease" early on, a factor that de Pablo enjoyed playing "because (she's) so not that in real life". Some aspects of Ziva's personality disturb him, such as the fact that she sleeps with a gun in her hand and snores very loudly . However, as co-workers, they respect each other despite their frequent exchange of sarcastic remarks . Both have had a string of failed romances . </P> <P> Team leader Gibbs (Mark Harmon) resigns in Hiatus (Part II), the third season finale, and appoints Tony as his replacement . During the 2006 summer break, it was reported that Ziva would fall under suspicion of being a spy in the fall premiere, and in the opening episode, "Shalom", she is framed by the Iranian government for the murder of a terrorist in FBI custody and the two agents guarding him . When she initially goes to the Israeli embassy to report their deaths, which she witnessed, Mossad Officer Michael Bashan asks her directly, "Did you or did you not sleep with him?" In response to her confusion, Bashan tells her that he knows that Tony has been visiting her apartment at least once a week for the past three months and that Mossad officers have been spying on her, evidently on orders from her father, Mossad Director Eli David . </P> <P>--Cote de Pablo </P> <P> Throughout the episode, Tony vigorously defends Ziva's innocence to the FBI, as well as berating any agent who dares question her loyalty when her car is found at a bombing in downtown Georgetown . She is eventually cleared of all wrongdoing . Though Ziva never addresses Bashan's accusation and her relationship with Tony is left undefined, there is no overt romantic connection in subsequent episodes . </P>

When do ziva and tony get together on ncis