Yes, I'm in this situation at the moment. I know exactly how you are feeling. I sent someone two letters and I never received a reply on either!
I mean any reply at all would of been better than no reply. Now I'm just left wondering and doubting (

), even though I received a lot of positive vibes from her. It really doesn't take too much time or effort much to reply to a letter. :evil:
I would recommend that you go up and talk to him about it (even though it seems the scariest thing to do). For reasons I won't go into, I can't do the same (I wish I could), and I don't think I'll see her ever again. It's playing on my mind over and over again.
Unfortunately, rejection is an unescapable part of life, but take pride in the fact that you never left things to chance, which is a fantastic achievement, and you gave it your best shot.