Ah! I have a hard time sitting quietly alone in a shady corner unobserved. It is commonly difficult for an unattached female to do that. Why can guys do that, but women cannot?
Guys don't have obvious physical parts around the thorax that bring instant attention no matter the lighting level.
So guys can fly 'below the radar' in a room.
Women, obviously, have noticable physical differences from men, and men are 'hardwired' in the brain to notice such.
The only time I have NOT been able to 'fly under the radar', I was delivering a message, it was ladies night, and I was almost the only guy there.
I hate that part - sitting alone! I used to try to go to restaurants/bars, etc. alone when I was single and traveling; it didn't work for me.