My wife has the same fear and I have always told her adamantly that it's not something I desire. I started seeing a therapist a few months ago and I have discovered that since I was very young (5 yrs old) that I have wanted to live my life as a female. I had suppressed it and denied it for years. Now that I've made that discovery, I am working on deciding what path I'm going to take. I have a nice life and my wife loves me after all these years so I'
have a tough time thinking I could walk away from that. My hope at this point is that we can come to an agreement on me living more of a fluid kind of life. I think she saw something in me that I wouldn't and couldn't see in myself.