I've gone out without pants a few times with a short skirt. I once deliberately flashed another woman while we sat in the park, with my knickers on, and like many of us I have often been nude on the beach
I have a husband and a "boyfriend" (my husband calls him that but its a misnomer. He's somebody else's husband for a start! And I've never met him outside the bedroom lol. And wouldn't have a real boyfriend because I'm happily married!)
Well we picked them for that reason. But things aren't always as advertised! But mostly, yes. PS my husband is not small (20cm) so its not always easy to find bigger
I think any man is going to know that someone else has been there. Even without going down on you. Even fingering will tell, and if you're stretched out it must be obvious!