"I was fully preparing myself to be single for the rest of my life. I think once you've found the right person, you just know," she said of the age gap. "I feel like I'm much older a soul than I am in age."
She also revealed that she isn't short on experience either.
"I've met enough guys to know — I've met enough girls to know. I don't feel 22. I feel like 27, 28," she said.
"Everyone experiments. It's part of growing up. I love a soul, not a gender."
The pair first started dating in November 2016 after meeting through mutual friends and the DNCE singer popped the questions less than a year later in October 2017. They've remained tight lipped about wedding plans (and loose lipped with the PDA) but recently revealed that they'll tie the knot in summer 2019.
Turner previously told Marie Claire that it's "lovely to be engaged," but she doesn't consider the relationship milestone isn't her biggest achievement.
“I’m still like, ‘Holy s**t! I’m engaged,’” she said. “It’s lovely to be engaged. Not like I achieved anything, but I found my person, like I’d find a house that I love and want to stay in forever.”