How do i tell that idiot the truth???

Is he blind? Stupid? Oblivious!?!?
He should know how i feel, I've told him. Is all that we were a sum of nothing? Is all that we are simply a fragment of vapor? Is time the force that keeps us apart?
He and I were so close, best friends. Then we fell in love... so much pain and space and time tried to pry us away from each other. So many circumstances brought us to where we are now, barely able to communicate, and not because of lack of desire. we are not together anymore.
He calls me his best friend, he worries over me, reasures me that i am strong and capable, laughs and jokes and tells me his secrets... and when i do get to see him, i watch his eyes behold me as though i am some kind of secret treasure that only he has ever seen, and then when he sees me looking, a wall goes up behind those same eyes.
I miss him like i would miss my right arm. He is one of the few in this world i trust entirely, one of the few that i would cross the world for, one of the only that i would die for. He inspires me, teases me, and uplifts me. He protects me from the people that hurt me, the circumstances of the world, and even myself. When i am broken he helps me put the pieces back the right way.
In short, I love him, and don't know how to tell him... again.