Her husband learned the truth through a Socratic process of elimination. "Did you hold his hand?" Yes. "Did you kiss him?" Yes. The rest follows.
Spineless, unprincipled, cowardly little baldheaded fuck, like every tyrant a coward, like every husband a slaveholder. Laid down the ultimatum: talk to him again, I'll divorce you. To my astonishment, she accepted.
Foolish girl. She'll divorce him anyway. She doesn't respect him, and, why should she? She'll spend two years learning to see the rest of his manipulativeness, and she'll leave carrying two additional years of accumulated anger on her bent, aching shoulders.