It doesn't always go as planned. My SO knew I crossdressed, didn't know that I started to become TG, and seemed fine with all I told her. She kidded me about it a bit and asked when she would see me en-femme. One day I came to her door tastefully feminine, said "Avon calling" when she answered and did a funny 30 second comedy routine. For several days the relationship went crash-tinkle-tinkle. I felt she had been dishonest with me.
Skip to the present, with enough talk about it between then and now. Over time she accepted it better, not fully, but better. Last week we were in TJ Maxx she fake modelled a maxi dress (way too long for her) and held it up to me, and grinned. In addition to being a revelation it's the start of a process.