Do I Date Him, or Do I Not?

My heart is confused. I am scared of myself. He is so wonderful and my mind knows that, but it's almost as if my heart is barred shut; as if it is unreachable in my relationship with him. It is free to empty its own emotions but refuses to take in any emotion it most desires. I need to grow up, frankly. I'm still waiting for my perfect six foot, all-American, curly-dark haired man to come sweep me off my feet and hold me forever. That's not reality. But he is so far from that fantasy, however, his character and his love for me far exceed any "knight in shining armor." My mind chooses him, but my heart is not yet loyal to him. I am trying desperately to tear open the bars that separate my heart from him, but I can't I don't trust myself that if I see something I like better, I won't go after it instead. That scares me. I refuse to do that to him. That is where my dilemma lies.