Pursuant to MCL 750.31, "Complainant and time prosecution to be commenced–No prosecution for adultery, under the preceding section, shall be commenced, but on the complaint of the husband or wife; and no such prosecution shall be commenced after 1 year from the time of committing the offense."
It is not punishable by up to life in jail. It is extremely rare that it is ever pursued. In fact, I believe it was only threatened in 2007 against a woman who was refusing to testify in a related domestic assault case. For the complete statue, visit the Michigan Legislature website and search for keyword "adultery."
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I agree with Ms. Heckler's answer and would add that, as Michigan is a no-fault divorce state that permits even a spouse who is committing adultery to file for divorce and terminate a marriage, it may be time for that spouse to consult with a divorce attorney and move on.
The above comment is meant as general advice. More information would be needed at a confidential consultation in order to provide an accurate evaluation of your legal options.
I would certainly hope that the prosecutor in your area has better things to do with his or her time than to pursue criminal charges of adultery. And even if they were to pursue felony criminal charges for adultery, the likelihood of a life sentence I would suggest is minimal at best. While adultery is technically still punishable as a crime, the State also defines adultery as cohabitation between two divorced persons (MCL 750.32)! How often do you see that prosecution occurring? If someone were to be charged with adultery, I think it would make headlines and generate substantial TV coverage -- and would be politically embarrassing to a prosecutor's office.
Nevertheless, the issue of spousal abuse is separate from the issue of adultery -- and it is not particularly appropriate to employ an excuse of alleged abuse as having forced someone into another's arms. And while Michigan is a "no fault divorce" state, meaning that the courts don't necessarily take into account whose alleged fault it is that the marriage has failed, adultery can be a factor in spousal support calculations and abuse is a factor in child support determinations. It is always best to consult with a competent local attorney about your options. Good luck.
Providing any type of advice by answering your question on this service doesn't create an attorney-client relationship. If you would like to consult with me further about this matter, please feel free to contact me at your convenience.
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