Stayfit:
Believe in reincarnation. Your cat will come back to you. Keep your eyes open and your dear kitty will be back. And I'm sure he is still with you in spirit for the time being. Just keep telling him to come back to you, and he will.
I have a dear kitty that I can't imagine losing right now. She is so precious...and she's not just a cat. She's my little girl...my best friend...the one who calms me and helps me sleep when my mind is flying a hundred miles per hour...my little baby. More than anything, she's a part of my life...just as your little kitty was to you! We cat people understand each other, and I feel your loss. :-(