<P> In episode 22 of season 6, "The Hole in the Heart", which saw the death of Vincent Nigel - Murray (Brennan's favorite intern) at the hands of renegade sniper Jacob Broadsky, Booth has Brennan stay at his apartment for her safety . Later that night, Brennan, still overcome with shock and grief over Vincent's death, goes into Booth's bedroom and they talk about the events of that day, and then allows Booth to hold her in bed . It is implied in the following day that they had sex . In the last scene of the season 6 finale, "The Change in the Game", after the birth of Angela and Hodgins' son, Brennan tells Booth that she is pregnant and that he is the father . </P> <P> At the start of Season 7, a very pregnant Brennan and Booth are a couple but are going back and forth between apartments . Booth suggests that they should have their own place, whereas Brennan wants Booth to move into her apartment . It causes a minor rift between them, but is resolved when Booth admits why he wants to move into a new house and Brennan having some time to think over it says it's a good idea because she'd need him practically, emotionally and sexually . In episode 6, "The Crack in the Code," they decide to buy a two - story house in the suburbs--which they jokingly called "The Mighty Hut"--that Booth found at a police auction and renovate it, (according to a mailed check sent to Brennan in "The Heiress in the Hill", in season 9, the "Mighty Hut" 's address is "1297 Janus Street, Washington DC, 20002"). In episode 7, "The Prisoner in the Pipe", Brennan goes into labor inside a prison just as she discovers who killed in an inmate there and Booth rushes her out with the intention to take her to the nearest hospital, but they both know she won't make it in time . This leads them to driving to an inn close to the prison . At first, they are rejected and are told to leave, but after some desperate pleading from an agonized Brennan, the two of them are led to a stall where she gives birth to their daughter, Christine Angela Booth (named after Temperance's mother, Christine Brennan, and Temperance's best friend Angela Montenegro). Some time after the delivery, Temperance and Seeley both go back to their home where they celebrate with their friends from the Jeffersonian, who brought dinners that would last a few nights as well as a few baby supplies . In "The Past in the Present", Brennan becomes the prime suspect in the murder of her schizophrenic friend, Ethan Sawyer, after supposedly threatening to kill Christine . Max advises Brennan to get off the grid and go into hiding, but she and Booth do not follow up at this suggestion . However, at the end of the episode, after Christine is christened in a Catholic church, it is revealed Brennan decided to take her father's advice and flee with her daughter until her name is cleared . Just before Brennan flees town with Christine, she tells Booth she loves him and not just because of their daughter . After she is cleared of Sawyer's murder, Brennan, Booth and Christine resume their family life . </P> <P> At the end of Season 8, Brennan finally decides to marry Booth . However, their plans are ruined when a vengeful Christopher Pelant blackmails Booth, threatening to kill five random people if Booth marries Brennan . Booth calls off the wedding, but does not explain the real reason to Brennan . Brennan is devastated but pretends to be fine with this . In the season 9 premiere, Brennan fears that since Booth turned down her proposal, she fears that the love from their life is fading . After talking with bartender Aldo Clemens, a former priest and Army chaplain Booth confessed to, she realizes that it was uncharacteristic for Booth to suddenly cancel the wedding as he believed in marriage and that he likely had a legitimate reason to do so . Despite her colleagues' anger at Booth, she decides to stay with him, telling him that she understands that he has his reasons and has faith that he will resolve the issue . In the episode 4, "The Sense in the Sacrifice", after Booth singlehandedly tracks Pelant down through an abandoned building and kills him with a single gunshot, he reveals to her that Pelant had blackmailed him . Pelant had threatened to kill five innocent people if Booth continued with the wedding or went to the police or FBI . At the end of the episode he proposes and she happily accepts; unknown to them, Caroline, Angela and Hodgins witnessed it via the security cameras . In "The Woman in White", Booth and Brennan marry at a small garden ceremony outside the Jeffersonian . </P> <P> Brennan had a brief relationship with FBI Agent Tim Sullivan (Eddie McClintock), also known as Sully, whom she met while on a case when Booth was in therapy due to his grief - induced rage over his self - perceived role in the death of serial killer Howard Epps . Sully asked Dr. Brennan out on a date after their case was completed, and they began a relationship . Their relationship ended, however, when Sully decided to sail a boat down to the Caribbean, and Brennan declined to leave the Jeffersonian to go with him despite Angela trying to persuade her to follow him; psychiatrist Doctor Gordon Wyatt (Stephen Fry) speculated that this was due to Brennan being unable to live a life without purpose . Despite Dr. Wyatt's original perception as to why she stayed, there exist strong indications, especially through Angela's observations of the situation, that the real reason she stayed was because of Booth . Sully returns in Season 12 . </P>

When does bones tell booth she's pregnant