Yes. If you committed adultery, you can still file for divorce. Every state offers no-fault divorce, which means you can end your marriage without admitting fault or proving anyone’s misconduct.1Justia. No-Fault vs. Fault Divorce Under State Laws Your right to file exists regardless of what happened during the marriage. The harder question is how your affair might affect the financial and custody outcomes once the case is underway.
Filing on No-Fault Grounds
A no-fault filing tells the court the marriage is over because of “irreconcilable differences” or an “irretrievable breakdown.” You don’t assign blame. You don’t need to disclose your affair in the petition. Most divorces proceed this way because it avoids a drawn-out courtroom fight over who ruined the marriage, and all 50 states allow it.1Justia. No-Fault vs. Fault Divorce Under State Laws
Nothing about your past conduct disqualifies you from being the one to file. You can file first even if you are the spouse who had the affair.
If Your Spouse Files on Fault Grounds Instead
Many states still keep traditional fault grounds on the books, and adultery is the most commonly cited one. Your spouse could file a fault-based petition naming your adultery, but the divorce itself still goes through. A fault filing doesn’t block the divorce. It changes which factors the court weighs when deciding money and, sometimes, custody.
A Faster Timeline
Several states require couples to live apart for months or even years before a no-fault divorce is granted, but many of those same states let a spouse skip the waiting period when filing on fault grounds like adultery.2Justia. Legal Separation in Divorce: 50-State Survey If your spouse wants a quick finalization and can prove the affair, fault-based filing gives them that path. Your divorce could move on a shorter timeline than you expected.
Fault as Leverage
Alleging adultery also puts pressure on you to settle on terms more favorable to your spouse rather than have the affair litigated in open court. Depositions, subpoenaed records, and witness testimony about the details of an affair can be deeply uncomfortable. Spouses who committed adultery often agree to less favorable settlements simply to avoid that exposure, and the filing spouse knows it.
What Your Spouse Has to Prove
Courts don’t require a photograph or a confession. Adultery can be established through circumstantial evidence: hotel receipts, text messages, phone records, testimony from friends or coworkers, or patterns of behavior that point to a sexual relationship outside the marriage. Some spouses hire private investigators. The burden is lower than in a criminal case, and a convincing combination of circumstances is often enough.
Defenses You May Have
Two traditional defenses can take the air out of a fault claim. The first is condonation. If your spouse knew about the affair, forgave you, and continued the marriage (especially by resuming the sexual relationship), many courts will treat the adultery as forgiven and no longer available as a fault ground.
The second is recrimination. If both spouses committed adultery, some states still recognize the principle that neither can claim the role of the innocent spouse. In practice today, this mostly undercuts the complaining spouse’s ability to use adultery for strategic advantage. No-fault divorce remains available either way, so neither party gets trapped in the marriage.
Property Division and Dissipation
In most states, adultery has little or no direct effect on how courts divide assets and debts. Equitable distribution states divide property based on financial factors: each spouse’s income, earning potential, length of the marriage, and contributions to the household. A handful of equitable distribution states list marital fault as one factor a judge may weigh, but financial considerations still tend to dominate.
Community property states generally start from a presumption that assets acquired during the marriage belong equally to both spouses, though the split is not always rigid. Some community property states let judges divide property in whatever way is “just and right” rather than mandating an automatic equal division.3Justia. Community Property vs. Equitable Distribution in Property Division
The place where adultery hits your wallet hardest is dissipation. If you spent marital funds on the affair, a judge can hold you accountable. Expensive gifts, vacations, rent for an apartment, dinners, and hotel rooms all count. Dissipation means spending marital money for a purpose outside the marriage, in a way that falls outside your normal standard of living and benefits only you. The court isn’t punishing the affair. It’s correcting the financial harm from draining shared resources.
When a court finds dissipation, the remedy usually involves reimbursing the marital estate for the amount spent or giving your spouse a larger share of the remaining assets to make up the difference. If your spouse can trace credit card charges, cash withdrawals, or transfers to your affair partner, expect those amounts to come back up during property division.
Alimony Is Where Adultery Carries the Most Weight
Many states explicitly allow judges to consider marital fault when deciding whether to award spousal support, how much, and for how long.4Justia. Alimony Laws and Forms: 50-State Survey The rules vary dramatically, but outcomes fall into three general patterns.
- Discretionary reduction. In many states, a judge can reduce the amount or duration of alimony if the requesting spouse committed adultery. The affair becomes one factor among many, alongside income disparity, length of marriage, and each spouse’s financial needs.
- Complete bar. A smaller group of states prohibit alimony entirely when the requesting spouse’s adultery caused the breakup of the marriage. If your affair is proven to be the direct reason the marriage ended, you forfeit any right to spousal support, even if you would otherwise qualify based on financial need.4Justia. Alimony Laws and Forms: 50-State Survey
- Increased obligation. If the paying spouse committed the adultery, some courts order higher support payments on the theory that the innocent spouse shouldn’t bear the financial consequences of a breakup they didn’t cause.
The distinction between “adultery happened” and “adultery caused the divorce” matters enormously in states with a complete bar. If the marriage was effectively over when the affair began, or if your spouse forgave the conduct and the divorce happened later for different reasons, the bar may not apply. Courts look at the causal connection, not just the fact of infidelity.
Custody Usually Stays Separate
Courts decide custody based on the best interests of the child, a standard focused on which arrangement best serves the child’s physical and emotional well-being.5Legal Information Institute. Best Interests of the Child Having an affair does not make you a bad parent, and courts generally treat the two issues as separate. A judge will not take custody away from you simply because you were unfaithful to your spouse.
The affair becomes relevant only when the conduct around it directly affected the children: a parent who left kids unsupervised to meet an affair partner, exposed them to inappropriate situations, or introduced a volatile new partner into the household. In those cases the judge isn’t punishing adultery but responding to evidence that the parent’s choices harmed or endangered the child.
Your spouse may also push for a morality clause in the custody agreement. These typically restrict both parents from having overnight romantic guests while the children are present, or require a waiting period before introducing a new partner. If you agree to such a clause and later violate it, you risk a contempt finding or a modification of custody.
Prenuptial Agreements With Infidelity Clauses
If you signed a prenuptial or postnuptial agreement with an infidelity clause, your adultery could trigger financial consequences spelled out in that contract. These clauses typically specify a penalty: the cheating spouse forfeits a certain percentage of assets, pays a lump sum, or loses the right to spousal support.
Enforceability depends on where you live. States with strong no-fault divorce policies tend to reject infidelity clauses as contrary to public policy because they impose blame-based consequences in a system designed to avoid blame. Other states will enforce them if the clause is clearly written, defines infidelity in specific terms, and imposes consequences a court considers reasonable rather than punitive. A clause requiring you to forfeit everything you own is far less likely to survive review than one imposing a moderate financial adjustment. Procedural details matter too: if both spouses didn’t have independent legal counsel when signing, or if one spouse was pressured, courts may throw out the clause or the entire agreement.
If you have a prenup and you’ve had an affair, have a lawyer review the agreement before you file.
A Word on Criminal Adultery Laws
Roughly a third of states still have criminal adultery statutes on the books. In most of those states, adultery is a misdemeanor. A few treat it as a felony carrying potential prison time and fines in the thousands of dollars. Prosecutions are extremely rare, but the statutes exist, and in a contentious divorce a spouse occasionally threatens criminal charges as added leverage. Knowing whether your state has one of these laws is worth a quick conversation with an attorney, if only to take that threat off the table before it gets used.