Welcome to the forums, Kelly.
I'm not sure that I can shed any more light on this subject other than to affirm what some of the other girls are saying.
It took me 23 years to accept who I am and come out to my GF, and even then it took months not to feel guilty about being a girl when she came home from work. Even though she was totally amazing and took it all in stride (almost better than I did making the revelation) I still felt this guilt and uneasiness inside of me.
Your BF's quick change into boy mode was probably due to insecurities inside himself. It is hard to be in conflict when you have another monkey sitting on your back. Rather than be in a power play, he was more likely trying to rid himself of internal conflict so that he could deal with the more pressing, important issue of resolving the conflict with you.
The only thing that will make him more confident with who he is is patience. Especially if you guys have just begun this journey. Remember that telling you was a HUGE thing for him, and although you may be totally cool with it, he may not be.
I highly recommend the book "My Husband Betty" - you can get it on Amazon. It's written from the point of view of a GG married to a cross dresser and what they had to deal with. It may help you discover what questions you need to ask and how you can be supportive. He may not even know.
And reaching out to us was a good step. You may feel like what you are going through is strange, but it's not to us! For all of your questions, one of us has been through it!
Let me know if I can help in ANY way!
Hugs,
Cindy
