A rep for Zayn had no comment about the breakup reports, while a rep for Hadid hadn't responded to Billboard's request for comment at press time.
The couple's last big public appearance together was at last month's Met Gala, where they wore matching armored outfits. During a May 16 visit to The Tonight Show Starring Jimmy Fallon, Hadid told a story about how Zayn helped her win big at the poker table in Las Vegas.
Within the hour after the breakup reports surfaced, Hadid posted a selfie with Kendall Jenner on Instagram. So far, Zayn has stayed off social media.