The Little Mix singer sent gossips into a spin after flashing a diamond ring on her wedding finger at the premiere of the boy band's new tour movie 1D: This Is Us in London's Leicester Square on Tuesday (20Aug13).
Now it has emerged Malik proposed to Edwards, who he has been dating since 2011, at the weekend (17-18Aug13).
A source tells Britain's The Mirror, "It was so romantic - Zayn popped the question over the weekend when they were alone together. It's one of the first weekends they've spent with each other, as they've both been on tours with their bands. He wanted to wait for the perfect moment.
"All her bandmates were at the V Festival, and she couldn't wait to tell them. They're all really excited for her, as the rest of One Direction are for Zayn."
Malik, who showed his devotion to Edwards in June (13) by having a tattoo of her face inked on his arm, couldn't hide his affection for the blonde beauty at the film premiere. The stars, both aged 20, were spotted kissing on the red carpet, and they sat next to one another inside the theatre.