Story about selling old monitor

I decided to sell my old monitor.

At evening, I jokingly complain to my wife, that no one has written to me yet.

I got the message in the morning.

Other Person: You have a such a nice monitor.

Me: Good Morning! Do you want to buy it?

Other Person: No, I have the same one at home.

Later I realize, that my wife wrote to me, to make me happier.

PS

Story is stolen from the internet.

Plot hole:

When another person is writing to you, you can see their name, so the person would know that the other person is his wife.