When Brian does not tell Jillian that Stewie is helping with the rent, Stewie quickly gets in the way of Brian and Jillian's happiness living together. After arguing with Brian one night while he is having sex with Jillian, Stewie reveals that he is paying half the rent, prompting Brian to admit he never wanted to move in with Jillian at all. Heartbroken, Jillian leaves Brian, who blames Stewie for ruining the relationship until Stewie tells him it is himself that ruined the relationship due to his initial unwillingness to move in with Jillian. After many failed attempts to lift a saddened Brian's spirits, Stewie convinces Brian to try to get Jillian back. Brian goes to her apartment and asks her to take him back, only to find that she is on a date with Mayor West, who comforted her following their argument and is now living with her. As the two go their separate ways, Brian moves back in with the Griffins, where he manages to move on with his life.