"Many models are in long-term relationships for stability," the 26-year-old spilled. "Admittedly, not always with great men, but it gives them something to come home to, something grounding. That's how I see my relationship."
The blonde beauty - who was almost unrecognisable in her glossy cover shoot - explained she needed lots of cuddles on the couch after she was trolled on social media.
She also made sure to address her chilly reputation. "I can see why people think models come across as a little cold. When you start out you're so young and you don't have a voice. Everyone just tells you what to do and you can end up abroad in the middle of nowhere, with no one speaking English.
"It is very lonely... You develop a thick skin to protect yourself. Now I am 26, when I come on a set, I can say what I think and my opinions are noted. I've grafted to be here."
Read the full interview with Rosie in the October issue of Elle - out on Wednesday.