But it looks like the 21-year-old supermodel is pretty enamored with her former boybander beau.
"Gigi is obsessed with Zayn -- she won't let go of him too easily," the source adds.
Rumors that Hadid and 23-year-old Malik had broken up swirled earlier this month, however, the model appeared to debunk the reports last Friday, when she referenced her "boyfriend" while speaking with Elle. When asked whether she prefers a night out or night in, Hadid replied, "Night in. Cook. Paint. Play with my dog. Hang out with my boyfriend. Watch movies. Just chill."
Tellingly, she also lip synced to Malik's hit, "Pillowtalk," when she hosted the Maybelline New York Beauty Bash at the Line Hotel in Los Angeles on Friday.
An eyewitness told ET that Hadid went up to the DJ booth, where it appeared that she herself requested the song. Once it started playing, she reportedly insisted that the DJ turn it up twice as loud.