Kim told Tatler magazine: "I can't even think about being with anyone else than the man I'm with."
"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 reality star believes that the reason her relationship with Kanye West works is because they have known each both in and out of the spotlight.
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She explained: "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."
"It's good to be aware that he definitely doesn't want anything from me too, because he understands the business."
Twice married Kim Kardashian also cringes at past interviews she's given about her previous partners, seeing with hindsight that they weren't the right men for her.
Kim confessed: "When I look back at interviews I saying, "We're talking about marriage, etc." It's embarrassing. And I really believed it at the time!"
"I'm such a hopeless romantic that I'll always believe the next one is the one."
So for now it seems, Kanye West is Kim's one and only.