women aren't going to tell you the truth about their vax status; she'll say yes or no depending on the situation and who is asking.

can you trust her girlfriends to tell you the truth?

girl friends aren't going to tell you the truth about their friend's vax status; they'll say yes or no depending on the situation and who is asking. They probably don't even know for sure (see above)

can you trust ex-boyfriends to tell the truth about her vax status. He probably doesn't even know the truth.

there's no test, no Non-Vaxxed passport.

So, if a guy meets a woman he is attracted to, how to know if she is vaxxed??

there is no way to be sure...

Therein lies the whole issue regarding the extinction of the human race.