Minnesota has a "no-fault" divorce law. This means it is not necessary to prove your spouse is at fault for the breakup of the marriage.
It is only necessary to prove that there has been "an irretrievable breakdown of the marriage relationship." This means that there is no hope that the spouses will want to live together again as husband and wife.
Because Minnesota has a no-fault divorce law, a spouse who wants a divorce is almost certain to be granted one by the court even if the other spouse does not want a divorce.
It also means that the fault of either spouse in the breakup of the marriage cannot be considered by the court in deciding custody, division of property, or anything else.