In order for him to be "the one" he must also see you as being "the one". Your fear stems from the fact that he may not feel the same way about you.
It takes courage to go after what you want or stake your claim. And yet if you don't tell someone what you are thinking or how you are feeling then you can't blame them for unintentionally hurting your feelings. At least if they knew how you felt or what your expectations are then they can either confirm they too are on the same page or in a different place mentally and emotionally. (Knowing where you stand is always better than hoping). As I said from the beginning if he doesn't see you as being "the one" then by default he is not "the one" for you! One man's opinion! :-) Best of luck!