In an interview and personal essay for Vanity Fair, published Thursday, Cyrus said: "The reason that people get married sometimes can be old-fashioned, but I think the reason we got married isn't old-fashioned -- I actually think it's kind of New Age."
"We're redefining, to be f--king frank, what it looks like for someone that's a queer person like myself to be in a hetero relationship. A big part of my pride and my identity is being a queer person."
"What I preach is: People fall in love with people, not gender, not looks, not whatever," she continued. "What I'm in love with exists on almost a spiritual level. It has nothing to do with sexuality. Relationships and partnerships in a new generation -- I don't think they have so much to do with sexuality or gender. Sex is actually a small part, and gender is a very small, almost irrelevant part of relationships."
Cyrus, who first met Hemsworth 10 years ago while working together on the Nicholas Sparks movie "The Last Song," also said that married life is "zero percent different" than dating for the two of them.
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However, she did say that losing the Malibu home she shared with Hemsworth "changed" their relationship more than getting married has.
The "Nothing Breaks Like the Heart" singer explained that if it wasn't for the Woolsey Fire back in November that destroyed their California home, the longtime couple might not have tied the knot.
"I'm not sure without losing Malibu, we would've been ready to take this step or ever even gotten married, who can say?" Cyrus said. "But the timing felt right and I go with my heart. No one is promised the next day, or the next, so I try to be 'in the now' as much as possible."
"I would say that losing the house changed us much more than getting married changed us," she added. "When you experience what we experienced together with someone, it is like glue. You're the only two people in the world who can understand."
Despite the natural disaster, which destroyed most of their possessions, the pop star expressed that getting married wasn't like "putting Band-Aid on a bad situation and saying, 'Oh well, you know, now everything will be better."
"A lot of people use marriage I think maybe for a cure," she continued. "But like my favorite woman in the world, Hillary Clinton, says: We're stronger together. That'll make me get emotional. That's what she meant by it. Like, who gives a f--k if he's a guy, if I'm a girl, or if he was a woman -- who gives a f--k? We really are stronger together. One is the loneliest number."
The March issue of Vanity Fair hits newsstands March 5.