Probably not. There have been a few lawsuits for "intentional infliction of emotional distress", but your ex probably wasn't trying to hurt you as much as he was indulging his own desire for physical gratification. Call some attorneys in the Harrisonburg are in the field of "accidents and personal injuries" and see.
[Please note: I'm only licensed to practice law in the State of Washington. This communication does not comprise legal advice, nor does it form an attorney-client relationship.]
Unlikely. But you can certainly sue him for divorce to end the marriage. Courts in most states don't pay much attention to adultery, even for custody issues. See a family lawyer for help.
Disclaimer: I'm only licensed in CA. Please note that this answer does not constitute legal advice, and should not be relied on, since each state has different laws, each situation is fact specific, and it is impossible to evaluate a legal problem without a comprehensive consultation and review of all the facts and documents at issue. This answer does not create an attorney-client relationship.
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