 In the field, he sometimes takes advantage of her status as a civilian to obtain information which he, as a federal agent, would otherwise be unable to obtain without going through the time-consuming bureaucratic process.They often go undercover together as a couple whenever a case requires.Booth shows an apparent jealousy of Brennan's romantic relationships, particularly in the episodes "Two Bodies in the Lab", "The Woman in Limbo", "The Headless Witch in the Woods", "The Man in the Mansion", "The Boneless Bride in the River", "The Con Man in the Meth Lab", and "A Night at the Bones Museum".