Charlotte,
This is a tough question and faces you with the dilemma , are you going to be truthful to yourself or your wife ? At the moment it's proving difficult to do either .
Personally I've found it wonderful to be in a position to be free to contact the LGBTQ community , our social group was asked to attend the Pride week at Boston ( UK) college to try and help students problems with gender and sexual issues .
On another occasion our group was asked to talk about our gender experiences in relation to the help obtained within the NHS . It was the first time I'd ever stood up and spoken to a large group of people especially dressed as Teresa .
At some point you need to get your wife's opinion on the LGBTQ communtity and the Pride movement , try and set aside your personal needs until you know what her true thoughts are . Before approaching your own needs you really need to know what they are so you can be truthful and honest with her , remember once you've gone down this road there is no going back . I took my chance and learned the hard truth on this point , that is when you need to start to believe in yourself and show you have the strngth to do so .
Also the other point to consider is even if you offer full support it doesn't mean you are gay , if I'm assuming that is your wife's problem again that is for you to sort with your wife .