Brennan was always with booth and married to him and even had a baby girl with him aswell named Christine. But ever since you came along she's been feeling very attracted to you all while being distant with booth because she loves you and only you also because when she sees you crying it makes her cry aswell because she's very emotional whenever it comes to you crying. Also whenever you panic or get angry about something she also panics or gets angry. Each emotion you feel she also feels