Talking to The Mirror, Harriett revealed she and Ronnie are going to be moving in with each other this June.
"Everything’s happening at once. We’re moving up towards London, which is exciting. It’s really close to Matilda [Draper], so we’ll be spending a lot of time with her, and going back and forth," she explained.
Harriett said she felt "fine" about the move, adding: "People say the cracks show when you move in together, but because we met in the villa and lived in each other’s pockets every single day, we’d already crossed that bridge.
"This is just a new chapter."
The Brighton-based beauty said they're most looking forward to having their own space, saying: "Ronnie spends a lot of time at mine, and I still live with my parents, who I love, but it’ll be nice to cook our own dinners and have our own routines."
She joked: "I’d like to say it’ll be me cooking, but he often takes over when I try. I’ll probably sit back and be a princess!"
When asked about if she and Ronnie talk about marriage and kids, Harriett said: "We do, sometimes. He’s a few years older than me, I’ve just turned 25.
"I want to enjoy living my best life and doing this amazing job. But when the time comes, hopefully it’ll be with him."
Referencing 'The Butterfly Effect', Harriett said if they hadn't of done All Stars she doesn't think she would have ever spoken to Ronnie again. She revealed: "He was blocked on everything. My manager actually unblocked him for me.
"When we came out, I was like, “I’ll save your number now,” because he was just an unsaved number in the Love Island chat!"
Despite being voted out of the villa for being the "least compatible" Harriett says she thinks she's found 'The One'.