You may file for a Legal Separation (so-called - Limited Divorce).
Another option is a marital separation agreement (property settlement agreement) that is a written contract dividing your property, including your rights and alimony and custody issues, division of real and personal property, education, insurance, tax returns, and retirement benefits.
You would likely need an attorney to write either document. You may view the exampel of the form here - http://www.ilrg.com/forms/divorce-nc-setag/us/de
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