Thanks to xkatjafx, I found skull_boy_love, a Harry Dresden/Bob the Skull (of The Dresden Files) lj community, to which belmanoir posted

Title: Too Good To Be True
Author: belmanoir
Fandom: The Dresden Files, TV-verse.
Pairing: Harry/Bob
Rating: NC-17
Summary: It's embarrassing to still have a crush on your teacher twenty-five years later.
Warnings: Spoilers for the show through 1x10, "What About Bob?"
Word Count: 5,251

the first Harry/Bob story longer than a ficlet that incidentially also has explicit sex (and hey, the author isn't deterred by the whole "incorporeal" thing!). Well-written, good characterizations, believable banter, plus: Hot. Nice. Go read and comment!