Delusion of privacy

"You were barely human" he says.
"How so?" 
"I saw you with your husband and found you so attractive. You're not like I imagined".
"Explain".
"You're so much better. Now that I know you."
"We're all only human" she whispers.
Our collective delusion of privacy: we so easily believe no one is listening, even on a crowded evening bus.