Now her mum has excitedly confirmed that the young couple are getting married.
"It's official. I'm over the moon," Debbie Dufty said. "They are really in love."
"It's wonderful because Zayn's absolutely gorgeous and Perrie loves him to pieces," she told the Dorset Echo. "It's just perfect because they get on so well together and they understand each other so it's just fabulous."
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As if there wasn't enough excitement on the red carpet at the Perrie, 20, sparked speculation that Zayn had popped the question by wearing the sparkler.
The 20-year-old singer arrived with her bandmates looking stunning in an embellished gown by Brazilian designer Patricia Bonaldi — but all eyes were on her new accessory.
The presence of the beautiful band immediately sparked intense speculation on Twitter but some fans dismissed it as a one-year anniversary present ring from Tiffany.
According to reports, Zayn, 20, popped the question at the weekend. It is thought that they have not yet set a date for the wedding.
Zayn Malik posing with his mum Tricia at the premiere
"All her bandmates were at 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."
The hot young couple originally started dating in December 2011 after meeting on the set of The X Factor. Although their first attempt at a relationship ended after a few weeks, they started dating officially again in April 2012.
Their romance was rocked in January amid reports that Zayn had been unfaithful with a waitress. But he recently described their relationship "stronger than ever" — and even got a cartoon picture of Perrie tattooed on his arm.
"She loved it, she thinks it's good. It's a good sign," he said of the inking.
"She was shocked at first but loves it now. She things I'm crazy, like everyone else does. To be fair, I am a little bit crazy… I'm happy to be labelled the crazy one of the group."