I have been topped by a trap for the first time a couple of weeks ago
We met at a disco ~three months ago, she showed me she had a "surprise" but I didn't care, she is really beautiful, smart and shy
We dated for three months
We had sweet passionate sex & always cuddled for hours
She never asked me to top and I never asked her to top me
I didn't even ever practiced a fellatio on her
Then, a couple of weeks ago, I've tried to practice oral sex on her
She was embarrassed, I thought that she believed there was something wrong with her "surprise"
Than I sat on her cock and told her that for me it didn't matter if she had a cock, I found her a gorgeous woman
She fucked me slowly first and then hard and at times I've asked her to stop… after a good ten minutes I found myself begging for more anyway - and I consider myself totally heterosexual (still)
Then I topped her as usual and we came together as usual
I still prefer to top and she still prefers to be topped, but I find nice that sometimes we could have fun with something different
Just my 2ยข, don't over-rationalize the "who tops who" thing, it doesn't make you more or less "masculine" or "feminine"
Sex is fun, just have fun