On Tuesday, Swift shared an Instagram clip of a good-luck card she received from Perry on the opening night of her “Reputation” tour. Enclosed along with the note was an actual olive branch. “Hey old friend,” the note appears to read. “I’ve been doing some thinking on past miscommunications and feelings between us and wanted to clear the air.” The words “deeply sorry” are visible as well. “Thank you Katy,” Swift captioned the video, adding a double-heart emoji. Though Swift and Perry were once pals who exchanged friendly tweets, their well-known feud dates back to 2014, when Swift told Rolling Stone that “Bad Blood” was inspired by a female artist who’d stabbed her in the back.