Reading that last post was like reading a book written about my marriage. Traveling, enjoying events, spa treatments, picking up her favorite things, flowers, helping out with housework, holding her in my arms telling her how much I loved her and how happy I was to be spending the rest of my life with her and her telling me all the same things. I am with you when you say that you thought you had a fairy tale marriage. I did too.
Just like you, I see my wife trading out the responsible, loving husband for an exciting new boyfriend and yes she seems to be in the honeymoon phase with the OM.