Confused if I should open up about my gender curiousness

Hi all, I want to get the advice from cis girls as how did you react or perceive when your partner came out to you or you found out crossdressing. The girl I am seeing is pretty casual, but I have this urge to just tell it to her, it seems like she can be excepting. I am not sure, she looks like a pro queer supporter. I have never told this to anyone, and it kind of depresses me. What would you prefer:

Your partner, if a crossdresser should confess to you? I am not looking any participation from her, and I dont wear her clothes

If I am too good at hiding, should I continue hiding.