This might be narrow minded, but I just can't see Julia with anyone other than Barnabas! IMHO, they should have gotten together. I don't believe Barnabas was as oblivious to Julia as he pretended. She is almost his equal in attitude and speaking her own opinions, and perhaps that scares him just a bit, being the old-fashioned person that he is, and acknowledging her as someone hehe loved was in a way giving her power over him, over his emotions and his outlook on the world in general. Being the modern woman she is, her attitude could slowly change his own opinions of life and his place in it, and Barnabas is reluctant to change, I believe it frightens him.
All right, there were plenty of times when Barnabas was insensative to Julia's feelings, and once they became friends all those other women he kept falling head over heels for made him oblivious to some things around him, Julia most especially.
So now I'm contradicting myself, LOL! I'm not sure I know what to make of their relationship, accept for the fact that they definitely belong together.