Dear Mr. P.
Imagine this scene:-
Two women are sitting in a bar in Palma de Mallorca chatting.
One woman notices a man across the room looking their way. She leans over to the other woman and says:-
"Have you ever met him?"
The other woman relpies, "Yes I met him five years ago."
The first woman then asks "Where?"
The second woman states "At a conference."
Or this:-
Same scene.
First woman: "Do you know him?"
Second woman: "Yes, I have known him for five years."
First woman: "How do you know him?"
Second woman: "I am married to him."
Same scene.
First woman: "Do you know him?"
Second woman: "Yes, I knew him five years ago."
First woman: "Oh, what happened?"
Second woman: "We got divorced."
In each case follow up information is required for clarification but there is no implication that there was previous discussion with him.
Respectfully yours,
Tallulah