he's said she was black mailing him a claim she has strenuously denied.
He is the married person in this, he should have kept it in his trousers and none of this would have happened, end of.
Only he and she know what was said and what went on, and he has gagged all that because he didn't want his wife to find out, again easy answer was not to do it in the first place.
I have absolutely no sympathy for him at all, or her for that matter too.