do you think the best actor in the world could decieive you?

[Hatch]

You should also realize most victims wish to be deceived in one way or another.
Subconsciously that is.

That rich guy might hope the pretty girl likes him for who he is and not for the money.

So he keeps ignoring the signs that tell him otherwise.

Same with being conned.
Con artist work on your greed, vanity or whatever vulnerability they perceive.