I wanted to say that you aren't alone in having different romantic and sexual orientations, I've heard of that a few times. I can't really comment on sexual attraction but I'd say that I don't think most bisexuals are 50-50 on male and female attraction anyway and there isn't a rule to say that arousal has to be the same for both, so if you feel the bisexual label suits you, keep it. If you feel your romantic orientation is to females, you might have a more complicated label, like a homoromantic bisexual (there is nothing to say a bisexual must want relationships with both sex either- I know a heteroromantic bisexual and nothing wrong with that) but you don't have to blurt that out to anyone who asks if it is a little unwieldy.

Hope you figure yourself out soon and come to peace with it