I am in the team that says, if they would have consumated their love (because the old BAT loved her too, he just didn't know it!) it would have ruined the dynamics of the show.
[spoiler]In 1840, Angelique/Valerie/Miranda found out about Dr. Hoffman and truly felt the love....so much so that she felt the most threatened by Julia she took action! I believe that Julia was the only one who really threatened Angelique regarding Barnabas[/spoiler]
and a typical man, it took the schmuck about three years to realize that Julia was in love with him.
but i also read somewhere (might have been here) that Grayson Hall played the "I love him angle" herself and wasn't directed. She never ever uttered those words, and i do believe that [spoiler]Angelique was the first to call her on it, where the word love was even mentioned.[/spoiler] i might well be mistaken on this, tho.