My Disney Fascination has never dampered or hurt my relationship. My husband thought I was slightly looney, but he indulges in this passion of mine. He never really felt what I feel for Disney until we went on our magical honeymoon last year. Now he loves watching Disney movies and looking through disney stores. He is still not a fanatic like I am, but he understands, and thinks it's cute.
I'm sure that you don't have a problem. The person you are with simply doesn't accept your quirkiness. Would he think you were crazy if you were a scrapbook fanatic? Same concept, or would you think he was crazy if he watched every single football game and knew every player and their wives. LOL.
Whomever you are with, should love you and all of the extras that come with, like a Disney Fasnication! Good luck