Have you filed for divorce yet? Spouses owe each other the duty of support. Generally, if you are insuring her during marriage, a court would order you to maintain the “status quo” by paying for the insurance during the divorce. But you also have issues of support, her ability to be self-supporting, her obligation to pay her own bills vs. your obligation to provide her with support. You need to see an attorney and get this process started, so that you can resolve these issues. By the way, the fact that she cheated is irrelevant.
Best of luck to you.
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After the court requires jurisdiction over your divorce you may not cancel any insurance. Here, however, your employer cancelled your policy so you are not in contempt of court. A court will look at your and the your wife's overall financial situation and your support obligation, if any, before ordering you to add her to your new policy.
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