The two most-fancied lads at Hogwarts - one during his school years and the other who got crazy hot after leaving the school - are still in contact, and they're keeping the old inter-house grudges alive!
In an air-punch-worthy Twitter exchange, Tom Felton (Draco Malfoy) and Matthew Lewis (Neville Longbottom) were having a bit of banter about Matthew's upcoming movie Risen - and their Slytherin/Gryffindor roots started showing.
As if that wasn't cool enough, J.K. Rowling herself responded!
It's gratifying how utterly British this whole interchange is, too. Bloody brilliant, even.
Here's a quick reminder of how deep those inter-house rivalries run: from their first moments at Hogwarts, the kids were separated into their separate groups and always felt a staunch loyalty to their kin.
J.K. Rowling has been dropping a few nice little social media nuggets recently, including mock-berating Tom Felton for making Draco Malfoy so fanciable, and telling us the sad truth we never knew about Hagrid.
Despite knowing that a lot of the cast members are good friends in real life - including sworn enemies Ron Weasley and Draco Malfoy - the eternal question stands: are you team Gryffindor or team Slytherin?