Thats the big catch 22. GGs are distraught that when their partners do not reveal their crossdressing before marriage, yet 99% admit if they had known they would have run away. They would have pre-judged their partner on the grounds of his clothing preference and would not have judged him as a person. Yet the fact that they did marry their partner shows that they loved him as a person, with a personality which already reflected his transgendered nature. Does this mean hiding the crossdressing was the right choice?
I guess it boils down to what you think is the bigger wrong, a crossdresser hiding his secret and part of his personality or a SO judging her lover over a prejudice which prevents her from respecting him as a person.