Whatever happened between them, he kept it a secret from his wife for 13 years, which in and of itself is worthy of being condemned as being dishonest.
On this thread, we have firsthand witness posts by a Preacher's Wife, who has said her husband has done the exact same thing as Cain: Given financial support to a woman, without the wife's knowledge, for over a 2 year period of time.
That doesn't make him dishonest.
Do you tell your spouse about every act of charity that you do? Do you tell your spouse when you tip a waitress 50% or 100% instead of 15-20%? That is a charitable act to a female, without informing your spouse. Does that make you dishonest?
What you misread in others is merely a reflection of your mind.
Apparently your mind is corrupt. Mine is not. Innocent until proven guilty. I can wait a few days or weeks for facts or evidence to come out, not just her word, with ZERO proof of anything other than texts, mostly from her, and a single phone call. ONE phone call in all of October and November. Probably initiated by her. Wow... what a guilty man!