Spike,
My situation is similar, yet different from yours in that I am 40 years old, so I am dealing with condeming family members, not parents. I am the S.O. of an FtM just beginning transition (Marco). We are both going through divorces, have children from those marragies and desire to spend the rest of our lives together. Marco's situation, as far as family members are concerned, is o.k.. His oldest daughter, who is my daughter's best friend is not taking it well, but is trying to work through it. My family, on the other hand, are the totally intolerant ones (except for my dad). First, let me clarify that I consider myself to be a straight female. Although Marco was born a biological female, I see him for the man that he is on the inside. I have never in my life been attracted to women (not that there is anything wrong with this, I'm just saying how I am). My ex-husband and my sister (and I am sure other family members too) can't get past the "lesbian" issue and truly try to understand transsexualism. Because they persistantly tell my kids that their mother is in a lesbian relationship, my kids are having a very difficult time with this. They are really confused, and I feel that without any family support to back me, they can't even get to a point where they can process this from an unbiased standpoint.
I get extremely angry when my family says cruel things about Marco or refuses to refer to him with masculine pronouns because I realize that this type of thing is one of the most difficult things transsexuals endure while going through transition. I love him and feel helpless at times because I just wish I could do something magic and make it easier for him. Then, when my family is just making it more difficult, I really feel bad.
Well...after my rambling...let me make my point. Just be true to yourselves and your love for each other. Be supportive of your fiance and most importantly...be there to listen to him. One thing I have realized is that I have no control how my family members act, and they may never come around. I just need to give them the space to process this and come to an understanding in their own time and not try to force my situation upon them. I have set boundaries with my family members...when anything disrespectul or cruel comes out of their mouths, I terminate the conversation until they can be civil.
Hopefully, in time, our families can realize that love and happiness is what makes the world a better place, not condemnation and hate.
Take care,
Pam