In divorce proceedings, maintenance (commonly called alimony) is one of the most contested issues. A common question clients ask is whether their obligation to pay maintenance ends when their ex-spouse begins a new romantic relationship. The answer under both Illinois and Missouri law is more nuanced than most people expect.
How Illinois Law Addresses Maintenance and New Relationships
Under the Illinois Marriage and Dissolution of Marriage Act (750 ILCS 5/510), maintenance terminates automatically upon the remarriage of the receiving spouse. However, the statute also provides that maintenance may be terminated or modified if the receiving spouse is cohabiting with another person on a “resident, continuing conjugal basis.”
This is an important distinction. Simply dating someone new does not meet this standard. To establish cohabitation under Illinois law, the paying spouse must demonstrate that the receiving spouse is living with a new partner in a relationship that resembles a marriage. Courts look at factors such as:
- Whether the parties share a residence
- Whether they share household expenses and financial responsibilities
- Whether they hold themselves out as a couple to family, friends, and the community
- The duration and nature of the relationship
- Whether the new partner provides financial support that reduces the receiving spouse’s need for maintenance
The burden of proof falls on the party seeking to terminate or modify maintenance. Casual dating, occasional overnight stays, or a new romantic relationship alone are typically insufficient to meet the cohabitation standard.
How Missouri Law Handles Maintenance and New Relationships
Missouri law treats maintenance modification somewhat differently. Under RSMo 452.370, the court may modify or terminate maintenance when there has been a substantial and continuing change in circumstances. A new relationship, by itself, is generally not enough to constitute such a change.
However, Missouri courts will consider whether the receiving spouse’s new relationship has materially changed their financial circumstances. If a new partner is contributing to household expenses, paying rent, or otherwise reducing the receiving spouse’s cost of living, the paying spouse may have grounds to seek a modification.
Unlike Illinois, Missouri does not have a specific statutory provision addressing cohabitation as a basis for automatic termination of maintenance. Instead, the analysis is part of the broader change-in-circumstances framework.
Factors Courts Actually Consider in Maintenance Decisions
Whether you are seeking or opposing a maintenance modification, courts in both states evaluate a wide range of factors beyond a new relationship:
- Financial need: The receiving spouse’s actual financial needs and ability to meet them independently.
- Earning capacity: Whether the receiving spouse has taken steps to become self-supporting, including education, training, or employment.
- Duration of the marriage: Longer marriages generally support longer maintenance obligations.
- Standard of living: The standard of living established during the marriage serves as a benchmark.
- Age and health: Physical and emotional health of both parties can affect maintenance determinations.
- Contributions to the marriage: Non-financial contributions such as homemaking, child-rearing, and supporting a spouse’s career are considered.
- Income changes: Significant increases or decreases in either party’s income can justify modification.
What You Should Do If Your Ex Has a New Partner
If you are paying maintenance and believe your ex-spouse’s new relationship has changed their financial circumstances, do not simply stop making payments. Unilaterally stopping maintenance can result in contempt of court, back payments with interest, and attorney’s fees.
Instead, take these steps:
- Document the relationship: Gather evidence of cohabitation or shared financial responsibilities, such as shared addresses, joint bills, or social media posts indicating the nature of the relationship.
- Consult an attorney: An experienced family law attorney can evaluate whether your evidence meets the legal standard for modification or termination in your state.
- File a motion: If there are sufficient grounds, your attorney can file a motion to modify or terminate maintenance with the court.
What If You Are Receiving Maintenance and Start a New Relationship?
If you are the receiving spouse, be aware that your new relationship could be scrutinized. While dating someone new does not automatically end your maintenance, moving in with a new partner or commingling finances could give your ex-spouse grounds to seek a modification. Understanding these risks can help you make informed decisions about your living arrangements.
How Hunsinger Law Group Can Help
Maintenance disputes involving new relationships require careful legal analysis and strong evidence. At Hunsinger Law Group, we represent clients on both sides of maintenance modifications in Illinois and Missouri. Whether you need to seek a modification or defend against one, we can guide you through the process and protect your financial interests.
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See all of our divorce and family law posts
Keep your family's future as positive as possible. Have the licensed social worker attorney assist you during this difficult time. Call (833) 256-6644 or use our form to
schedule a consultation.
HUNSINGER LAW GROUPEmpowering families to create a better tomorrow