My partner and I were together for 13 years but our marriage lasted only a year. Our divorce was no one's fault.

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• Haley Mlotek is a writer, editor, and organizer.
• Her work has appeared in The New York Times Magazine, The New Yorker, and Bookforum, among others.
• The following is an adapted excerpt from her book "No Fault: A Memoir of Romance and Divorce."

I was married on a cold day in December. Thirteen months later, my husband moved out. We decided to separate in November after agreeing to spend the holidays with our families. We told just a few friends, thinking maybe this was temporary.