I do have to disagree with others who have answered your Thread. You can stop if YOU WANT TO!! The idea to crossdress is a built in mental thing which is in your mind only!! You are not being forced to dress, so you can stop. As one who did stop for 5 years, I can say that it is not easy!! Because that mindset is always there to tell you to put on the pretty clothes. BTW, as many of you know, I started dressing again only because my late wife begged me to do so. She missed Stephanie in her life!!
All that said, you seem to have a very smart girlfriend and I think she is a keeper!! I think she will stay with you. Maybe with more talking, to get more answers!!