You entered this relationship with some idea -- conscious or unconscious -- that you wanted to go about romance in a new way; you wanted to find someone who would be attracted to you for you, and not just for your surface-level appeal, like looks or career or the other usual factors of eligibility. Quite the lofty ideal, to be sure, but as your connection has deepened and matured and you both tried to fit the relationship into your own ideas of what a romantic relationship should be, you probably both slowly came to the realization that there's really not a whole lot of natural attraction between you. In your determination to avoid yet another relationship based on superficial factors, you've ended up going too far.
You might even feel as if you're basically just friends! Your emotional expectations may not be met in this relationship, and sparks don't fly between you naturally -- so, if you want this relationship to keep going, it'll be up to you two to learn to make them fly. This problem is hardly insurmountable; you each just have to face down your romantic ideals and then give them up in the face of what you've got in front of you, in stark reality. Reality is better than idealism, anyway, in the end; reality delivers, whereas an ideal will always be ephemeral and often unfulfilled.