I've only been "hit on" twice when dressed femme.
The first time was on Halloween and the guy working in the pizza place wanted a "kiss from a witch" (my costume). I was there with my (first) wife, so "no thank you", but I was thrilled that he thought I was the real thing.
The second time was at a gay-friendly bar. I was there with a GG friend, and this guy was coming on real hard to me. The problem was he was interested in being with a "drag queen" (yes, sex) and that was definitely NOT what I was trying to be (or do). Everything that came out of his mouth was reminding me how I was failing to pass - or even blend as a woman. Needless to say, he didn't "score" and my confidence was badly shaken.
