Dua said: “I want to finish my tour, Callum’s shooting, so we’re just enjoying this period.
“I’ve never been someone who’s really thought about a wedding, or dreamt about what kind of bride I would be.
“All of a sudden I’m like: ‘Oh, what would I wear?’”
Although Dua has seen people get engaged in the past, she “never really understood the weight of it”, but now she thinks committing to another person is “special”.
She said: “This decision to grow old together, to see a life and just, I don’t know, be best friends forever, it’s a really special feeling.”
The Dance the Night Away hitmaker is keen to have a family, but admitted she doesn’t know when would be a “good time” because of the demands of her pop career.
“I’d love to have kids one day. But it’s like the constant question of when would there ever be a good time – how it would fit in with my job and how it would work if I went on tour, and how much time out I’d have to take.
“I think it’s just one of those things that’s going to happen when it happens. I love kids, but I think there’s so much more to raising a child than just loving children.”
Dua and Callum had “many sliding doors moments”, where they were in the same place at the same time without realising, before being introduced at the River Cafe in London.
A year later, she was having dinner in Los Angeles with her friend Mustafa the Poet when, “all of a sudden”, Callum appeared.
She thought: “Oh, it’s that really hot guy from The River Cafe.”
During their conversation, the pair realised they both “just happened to be reading” Hernan Diaz’s novel Trust.
Asked if she feels they were destined to be together, she replied: “One thousand per cent.”