Zayn Malik, left, and Gigi Hadid at the Met Gala in New York. AP
Zayn Malik, left, and Gigi Hadid at the Met Gala in New York. AP
Zayn Malik denies assault on Gigi Hadid's mother Yolanda
The singer took to social media to comment on an incident with a family member that he says is "a private matter"
