He's been gone for three days =(
I'm hoping that he's hangin' out with his new girlfriend. Here's the story so far:
The last time I saw him was on Saturday. Everything was fine; I was outside fixing my bike, and I let him out. I scratched his head and said hello, and he wandered off to do his kitty stuff. He starting meowing--which I believe his his call to this new black cat I've seen around lately.
End of story! He walked across the street, meowing and meowing, went behind a house (which is nothing unusual), and I haven't seen him since.