I have never bothered to read the Harry Potter books and I probably never will simply because I just don't give enough of a crap (as entertaining as I do find some things in a "everything I know about this fandom I learned via osmosis" sort of way)
but I want to point at this in amusement just so I can say that Bolger couldn't be more Slytherin if he tried. Which really does not surprise me at all (also Rick and Pearson would both be Hufflepuff. And the world needs the fic where they're all friends despite this. Because: cute, but ultimately Not My Fandom. XD)