In the November issue of England's Tatler magazine, the 31-year-old E! reality star opens up about her stronger-than-ever romance with the "Mercy" rapper, 35. "It's so nice to have a best friend in this game who understands everything you're going through. Being with someone I've known for so many years is comforting." (The stars were pals for years before taking their friendship to the next level earlier this spring.)
"He's been there through so many different stages of my life and before I was famous, so this relationship is a different thing entirely," Kardashian continues. "It's good to be aware that he definitely doesn't want anything from me too, because he understands the business."
Kardashian -- whose ex-husbands are music producer Damon Thomas and professional basketball player Kris Humphries -- says West is The One. "I can't even think about being with anyone else than the man I'm with," she tells the magazine.
Though she's been known to idealize her previous boyfriends, Kardashian tells Tatler it's different with West. "When I look back at interviews I gave [about previous boyfriends] saying, 'We're talking about marriage, etc.,' it's embarrassing. And I really believed it at the time!"
She adds, "I'm such a hopeless romantic that I'll always believe the next one is The One."