Being seriously hit on by men is a sign you are passing. Me for the most part, I have attained gray-haired granny status by most people I see on the street. We were all in a Mobile station where the others buy their cigarettes were my girlfriend and her daughter were talking the cashier and they got into explaining our relationships. My girlfriend and my 12-year-old son was there and they tried to explain that I was the boy's father and she just didn't seem to to get it. She would look at me and seemed to be puzzling out how I could be the boy's father. Go figure, I must be getting the granny thing down, despite the fact that I have never had hormones nor surgery. I just wear padded bras 24/7/365 and no one has seen me as anything other than a granny.
That is my sign that I must be passing more in public than I am in my own mind. With you, your sign may be that no one can view you as your wife's husband. As for me, nothing can take away my womanhood because I am a woman, period, end of discussion. Fifty-three years living a butch lifestyle couldn't change that, so neither will what other's think.