The 19-year-old actress always tries to take her fiance's feelings into consideration when she gets offered work because she doesn't think any role is worth ruining a relationship over, reported E! online.
"I've turned down scripts, because I felt like it was things that not only make me feel uncomfortable, but I don't think any career is worth stressing out the person that you love the most or making them feel hurt. So, we both give each other boundaries," Cyrus said.
She also said that being engaged has helped her to feel more secure and now she doesn't worry about his on-screen romantic pairings.
"It's a thing, but it's not a thing. At this point we're engaged, like we're forever. I think if I was a girlfriend and all this stuff would happen I would feel like I need to show my ownership," she added.
The couple got engaged in May but have insisted they are not in a rush to tie the knot.