J.K. Rowling Takes Pride in Matthew Lewis and Tom Felton's Twitter Rivalry

Old rivalries die hard. And J.K. Rowling is more than ok with that.

The HARRY POTTER author recently tweeted commenting on a playful row between Matthew Lewis (Neville Longbottom) and Tom Felton (Draco Malfoy) duked out on Twitter.

The back and forth included obligatory Griffindor/Slytherin references, much to fans' excitement.

Rowling posted a screenshot of the conversation, tweeting, "So proud of my boys. Even after all these years, they still want to kick each other's arses."

Check out the conversation below!