Has someone defrauded you?
You are being dishonest.
Why? Because if you were honest, you’d admit that you knew you were being fooled, but that you went ahead anyway.
That little voice in your head told you to watch out, but you let fear or greed or pride over-come your better instincts.
And you were fooled.
Fine, so you were fooled. You’re a fool.
Double double-dupe yourself by pretending you didn’t know you were being fooled.
You can’t fool an honest man.