Warning: This post is on crack, and has absolutely nothing to do with Harry Potter and the Half-Blood Prince, so if you're looking for actual information, it's in the next cauldron, because this one brews nothing but insanity.
Really, all you would have to do is ask a Kyou Kara Maou! fan, and you wouldn't have had to read through 600+ pages of JK Rowling's writing.
Conrad Weller is the half-blood prince,
and Yuuri finds Wolfram crying in a toilet.
Loved the book, though. I haven't had this much fun reading a Potter book since Prisoner of Azkaban.