C., you’re more than just sort of.” Everyone knew it, even back in season one!Booth rushing to Brennan’s side and defense when she becomes a suspect herself -- and finding her mother’s earring at the crime scene -- isn’t even the half of it, though. The first time they kiss on screen is in season 3's 'The Santa in the Slush' when Caroline demands they kiss under the mistletoe in exchange for her pulling strings to get Brennan the use of the prison property trailer to spend Christmas with her father.
As she eventually discovers, Booth is alive, and the similarities in the skeletal structure point her to the real victim: his younger brother, Jared (Brendan Fehr).
The elder Booth is merely off trying to be the hero again, a shot in the gut his only reward for trying in vain to save state secrets and his brother’s life.
The biggest, most romantic moment of this whole episode might be the introduction of fan favorite Caroline Julian (Patricia Belcher), who will end up becoming perhaps the biggest Booth and Brennan shipper of all. Brennan’s two families come head-to-head during the trial of her father, Max Keenan (Ryan O’Neal), as every other member of the Jeffersonian team is called as expert witnesses for the prosecution.
However, the anthropologist plays it cool, insisting she’s fine to her co-workers, FBI psychologist Sweets (John Francis Daley), and even Booth as they all prepare to take the stand in support of evidence that Max killed the deputy director of the FBI.
From their first episode together, Brennan and Booth’s dynamic was electric, and while the will-they-or-won’t-they of it all took nearly seven seasons to sort out (more if you count that they don’t actually tie the knot until season ), their relationship kept fans hooked for all 245 episodes.