Even during the last confession interview of CW, he alleges he denied the affair to SW. Telling her he believed they were not compatible!
One of the first episodes of "Snapped" I ever watched, defendant testified that she'd rather have her husband physically assault her because she could fight back and defend herself. She went on to say that she had no defense against his lying, so she shot him.
Did CW think he was somehow sparing his soon to be dead wife by not telling her the truth? I still believe CW strangled SW when she was asleep and defenseless.