I don't think there have been any criminal prosecutions in many years. The main consequence might be him filing for divorce.
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As Mr. Ashman said, your husband may file for a fault-based divorce based on your conduct. Assuming he pleads and proves your adultery, you would likely be barred from receiving any alimony from him in or after the divorce. You should seek counsel if you or your husband decide to file for divorce.
Criminally, it's still a misdemeanor, but I wouldn't be real concerned about being charged with it. From a divorce perspective, in certain circumstances, it can bar alimony. Additional facts would be necessary I know if it would.