Never hide anything from your spouse. Ever. Especially not financial troubles. Some openness and trust could have gone a long way here. Perhaps his wife could have helped him figure out their financial problems, maybe she would have even directed him away from the scammers.
It's simply not possible (or even preferable) to have zero secrets from your spouse. I mean, I agree it's generally preferable to be open, but I think you're exaggerating. Do you tell your spouse everything about your life?
