Does an Affair Matter in Divorce?~ 2 min read

In Missouri, you don’t need to prove who was at fault to get divorced. If you or your spouse had an affair that led to the divorce that fact is may not be significant. However, that misconduct can influence property division, financial decisions, and even support, in particular, if marital money was spent on the affair. While the courts focus on fairness, the emotional impact of an affair often makes divorce more challenging, making Mediation or Collaborative Divorce more helpful in reaching a settlement.

Missouri is a no-fault divorce state. This means you do not need to show who was at fault to end your marriage. You simply have to state that the relationship cannot be saved. While an affair may feel like the central reason for your divorce, the law does not require you to prove it in order to file.

Even if the court does not weigh an affair heavily, the emotional fallout is significant. Broken trust often makes it hard to communicate or make decisions together. Choosing options like Collaborative Divorce or Mediation can help you handle these issues in a private setting, where you and your spouse can still work toward fair solutions for property and parenting without adding more conflict to an already difficult situation.

Although an affair does not prevent you from getting divorced, it can still play a role in dividing property. Courts can consider marital misconduct when deciding who gets what, and some Court’s may place more weight on misconduct than others. The Court has discretion to award an unequal division of property if they believe the misconduct was bad enough. If your spouse spent marital money on the affair, such as trips, gifts, or hotel stays, the judge may award you a greater share of property or require your spouse to reimburse what was spent.

An affair can sometimes affect more than emotions. If marital money was spent on the relationship, such as gifts or travel, a judge may require repayment or may award you a larger share of property. Health concerns can also play a role. For example, if an affair resulted in a sexually transmitted disease, the court could consider that in deciding support or dividing property. While not every case involves these factors, when they do arise, they can have an impact on the outcome.

If you are facing divorce and concerned about how an affair may affect your case, Family Ally can guide you through the process with knowledge and compassion. Contact Jennifer Piper today at 314-449-9800 to schedule a consultation.

Jennifer Piper

Jennifer R. Piper is a family law attorney, mediator, and parenting coordinator with more than 20 years of experience serving families in the St. Louis area. She is certified as a Guardian ad Litem and frequently appointed by courts to represent children in high-conflict cases. Jennifer is a former Chair of the Family and Juvenile Law Section of the Bar Association of Metropolitan St. Louis and an active leader in local and state bar organizations.
Her professional recognition includes being named to The Best Lawyers in America® (2017–2025), Missouri Super Lawyers (2021–2024), and receiving a Women’s Justice Award from Missouri Lawyers Weekly. Jennifer also holds an AV Preeminent rating from Martindale-Hubbell. She regularly speaks on family law topics and has helped shape family court procedures through her service on multiple committees.

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