Season 4 Booth and Brennan are absolutely ridiculous in their obliviousness. They were so a couple. He throws out his back, she’s there to fix it and take care of him. He has a concussion and she’s there icing his head, bringing him soup and babying him. He gets punched in the face and she’s there caressing his face and soothing his pain being all girlfriend like. He feeds her ice cream, she feeds him tofu. He takes her ice skating at night, helps her bury her dead dog. He wants her dad to teach his kid science. Gordon Wyatt cooks dinner for them “family style” at his apartment…its all there. A lot of people assumed they were a couple, and they wonder why…sexless dating idiots.
Throughout the season she keeps asking these questions and just saying things that make me think she was attempting to dip her toe into the relationship water. She was testing what it would feel like…but in the end (season 5), she got too scared to really try, too unsure of her own worth. She was already completely in love with Booth (even if she couldn’t name those feelings). She completely stopped dating after Man in the outhouse (except for Jared and we all know the psychological underlying issues with that…aka Booth lite). She expresses her desire to lose herself in another person, to want to believe that love is real, transcendent and eternal. She point blank questions if its worth it having ones happiness contingent on another person’s happiness. She wants to have Booth’s baby and in the end, her coma dream story is her way of testing what it would feel like to be in a relationship with Booth. She wrote him almost the same as he was in real life, but wrote herself the way she thought she would have to be in order to be good for him and worthy of being in a relationship with him.