Hi just another happily married occasional crossdresser who enjoys exploring her feminine side, but has absolutely no desire to be female at all.
Its only my wife who knows about Cindy and she has come to accept her and enjoy her company.
Your boyfriend was honest to tell you straight away and not let you find out in the future and be even more shocked
The key is communication and ask anything you like
You will find it's not that uncommon and they are plenty of us married with children who enjoy the experience of dressing and things, but once the dress is off can go back to being the man again lol

They are plenty of woman who once they get there head round this can accept his crossdressing and then again there are plenty who can't handle seeing there man in a skirt.
Only you will know