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 wo n'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.
when do booth and brennan become a couple
At the start of Season 7