As my father, the good reverend was fond of saying...."People are predictable and two plus two is, in my experience, always four."
And Cain was also an associate minister at his church.
At this time, I am doubting that sex was a part of the equation.
At this time, I do think that Cain was a good Christian who was well-off, and was willing to share some of his good forture with others who were less fortunate than he is.
-PJ