I have a vague recollection of having a dream recently about frolicking in girl wear with someone else!
I think I was wearing something feminine -- possibly white short-shorts -- and feeling sexy. At some point someone else appeared, a playmate, and I was happy but apprehensive about meeting them. I wasn't at all ashamed or embarrassed about what I was wearing, if indeed I was en femme. Certainly, the person I met was wearing white short-shorts or boyshorts, and not shy about it either.
What little I remember is that this other person had a penis, and I wanted to touch it, to experience cock for the first time. I was excited, but apprehensive. I wanted to feel it in my hand, but worried that I wouldn't enjoy it. Then this person humped my hip.
His penis was small and wimpy, and I was disappointed -- not in the penis, not in my partner, but in myself -- for not being as aroused by it as I had hoped. Instead I was thinking about girls, and pussy, and that this proves what my true preference is. I was at peace with my realization, as I let the gurl hump me.
That's all I remember. The thought of it now is massively arousing.