In most states, you cannot sue your husband for getting another woman pregnant as a standalone claim. No general tort exists for fathering a child outside the marriage. What you can often do is use the affair and the pregnancy to reshape your divorce: fault-based grounds where available, a claim that he wasted marital money on the other woman, adjusted spousal support, and a larger share of assets. In roughly half a dozen states, you may also have a separate lawsuit against the other woman under older common-law claims that still survive.
Who the Law Actually Lets You Sue
The claims people usually ask about target different people, and getting this wrong wastes time and money.
Alienation of affection and criminal conversation are lawsuits against the third party. You file them against the other woman, not your husband. Emotional distress claims can be aimed at either your husband or the other woman, but winning against a spouse is difficult. And the divorce case itself, while not a “lawsuit” in the tort sense, is where infidelity most often produces a real financial consequence for your husband, through how a court divides assets, sets support, and evaluates custody.
Suing the Other Woman: Alienation of Affection
Alienation of affection is a civil claim against someone who damaged your marriage, most often the other woman. To win, you have to show that genuine love and affection existed in the marriage, that it was destroyed or diminished, and that her conduct was a substantial cause. Proof of sexual intercourse is not required, though it helps.
Only about half a dozen states still allow the claim: Hawaii, Mississippi, New Mexico, North Carolina, South Dakota, and Utah. Most states abolished it decades ago.1Legal Information Institute. Criminal Conversation Tort If you don’t live in one of those states, this option isn’t available no matter how serious the affair.
Awards are unpredictable. Juries have returned verdicts ranging from a symbolic $1 up to multimillion-dollar figures, with the large numbers making headlines precisely because they’re unusual. Most cases settle for far less. In states that recognize the claim, the filing deadline is typically three years from the last act that gave rise to the claim, and conduct occurring after you and your spouse physically separate generally doesn’t count.
Suing the Other Woman: Criminal Conversation
Criminal conversation is a companion claim in the same small group of states. Despite the name, it’s civil, not criminal. It requires proof of a valid marriage and actual sexual intercourse between your husband and the other woman.1Legal Information Institute. Criminal Conversation Tort
Circumstantial evidence is generally acceptable. You don’t need a confession if the surrounding facts make the conclusion obvious, and an extramarital pregnancy is about as strong a piece of circumstantial evidence as exists. Damages can cover humiliation, emotional suffering, and reputational harm. Many plaintiffs file both claims together because the facts overlap even though the legal theories differ.
Suing Your Husband for Emotional Distress
If you want to sue your husband himself, emotional distress is the theory people reach for. Two versions exist, and neither is easy.
Intentional infliction of emotional distress requires conduct that is extreme and outrageous, not merely hurtful, plus severe emotional harm. Most courts have not treated adultery, even adultery that results in a pregnancy, as meeting that bar. You would typically need aggravating conduct on top of the affair: deliberate cruelty, psychological abuse producing a documented breakdown, or exposure to a serious health risk.
Negligent infliction of emotional distress has a lower intent threshold but its own problems. States differ sharply on when they allow the claim at all, and many require some physical manifestation of the distress or a direct physical impact.2Legal Information Institute. Negligent Infliction of Emotional Distress Proving that your suffering is severe and that it flows from your husband’s conduct rather than the general stress of a collapsing marriage is where these cases usually fall apart. Therapy records, medical records, and expert testimony from a mental health professional are essential.
STD Transmission Is a Different, Stronger Case
If your husband contracted a sexually transmitted infection during the affair and passed it to you, you may have a substantially stronger lawsuit. Courts in several states have recognized that a spouse who knows or should suspect they have an STD has a duty to abstain or to warn the partner before contact. Failing to do either can be negligence.
The elements are the familiar negligence framework: duty, breach, causation, and damages such as medical bills, pain, and emotional distress. Unlike a pure emotional distress claim, this one involves concrete physical harm, which is much easier to prove. And it doesn’t require you to live in one of the states that still recognize the older heartbalm torts. Negligence is available everywhere.
How the Affair Changes Your Divorce
Even where a standalone lawsuit isn’t realistic, the affair and pregnancy can significantly change the outcome of the divorce itself. How much depends on whether your state uses a fault-based system, a no-fault system, or both.
Many states still recognize adultery as an independent ground for divorce, even though a no-fault option also exists. Filing on fault grounds can carry real advantages. A spouse found at fault for adultery may be barred from receiving alimony in some states, or may see the amount and duration of support reduced. The innocent spouse may receive more.3Justia. No-Fault vs. Fault Divorce Under State Laws
In purely no-fault states, the infidelity itself carries less direct legal weight. Courts focus on economic factors rather than who did what. But the financial fallout still matters. Money spent on the other woman, gifts, travel, or a second household can still shift how assets get divided.
Spousal Support
Alimony calculations look at length of the marriage, each spouse’s earning capacity, and the standard of living during the marriage. Where fault matters, your husband’s adultery can directly reduce or eliminate his claim to support and strengthen yours. Where fault doesn’t matter, a court will still consider that he now has additional financial obligations, potentially including child support for the extramarital child, which reduces the household income available to support you.
Dissipation of Marital Assets
Dissipation is the single most useful financial concept here. It applies whether your state uses community property or equitable distribution.4Justia. Community Property vs. Equitable Distribution in Property Division Law It happens when one spouse spends marital money on something that only benefits themselves and has nothing to do with the marriage. Affair spending is the textbook example: hotel rooms, gifts, dinners, trips, rent for the other woman’s apartment, and support of the extramarital child all qualify.
If you can document the spending, you can ask the court to credit those amounts back to your side of the ledger. Your husband is effectively charged for the money he wasted, and you receive a correspondingly larger share of what remains. Proving dissipation requires financial records: bank statements, credit card records, cash app transactions, receipts. Courts vary on how far back they’ll look. Some limit the analysis to a few years before filing; others may examine the whole marriage. The burden typically shifts to the spending spouse to justify the expenditures as legitimate marital purposes, and affairs are hard to defend on that ground.
Child Support for the Extramarital Child
Once paternity is established, usually through DNA testing, your husband is legally obligated to support that child. Child support follows statutory formulas based on parental incomes, the child’s needs, and the custody arrangement. His obligation to the extramarital child is legally equal to his obligation to your own children. Courts don’t rank one child above another.
The practical effect on you is that household income drops by whatever goes to the other child, and that reduction ripples through your standard of living and the assets available in the divorce. Your attorney should factor both existing and anticipated child support into property division and spousal support calculations, because courts generally do consider these obligations, which can increase your share.
One boundary worth knowing: the common-law marital presumption of paternity treats a child born during a marriage as the husband’s child. If the other woman is married, her husband may be presumed to be the father, and overcoming that presumption requires DNA testing and a court order.
Custody of Your Own Children
The affair can affect custody, but not in the way people often assume. Courts decide custody by the best interests of the child, and adultery alone doesn’t automatically make someone a bad parent. Most courts require a link between the parent’s conduct and actual harm to the children.
Where the affair becomes a custody factor is when it affects parenting. If your husband introduced the children to the other woman in inappropriate ways, became absent or neglectful, or if the resulting upheaval caused the children documented emotional harm, those facts matter. Therapy records, school performance data, and expert evaluations are the evidence that supports an argument for arrangements that prioritize stability.
Infidelity Clauses in Prenups and Postnups
If you signed a prenuptial or postnuptial agreement with an infidelity clause, the pregnancy may trigger specific consequences spelled out in the contract: a lump-sum penalty, increased spousal support, forfeiture of certain assets, or a shift in how property gets divided.
Enforceability is the catch. Courts split. In some no-fault states, courts have refused to enforce infidelity clauses because they reintroduce fault into a system designed to eliminate it; one California appellate court struck down such a clause on that ground. A Hawaii court, faced with a similar provision, enforced it. States where adultery remains an independent ground for divorce tend to be more receptive.
Even courts open to enforcement watch for disproportionate penalties. A clause producing a windfall so large it would incentivize catching a cheating spouse rather than protecting the marriage can be found unconscionable. Modest, proportionate penalties tied to the length of the marriage are more likely to survive.
One firm limit: no marital agreement can override child support. Your husband’s duty to the extramarital child is set by statute and cannot be waived or redirected by a private contract.
Inheritance Rights and Your Children’s Shares
An extramarital child with legally established paternity generally has the same inheritance rights as any other biological child. If your husband dies without a will, that child is typically entitled to a share of the estate under intestacy laws, standing alongside your own children as an heir and reducing everyone else’s share.
Even with a will, the child may be protected. Many states have “omitted child” statutes covering children born after a will was executed. These laws presume the parent didn’t intentionally leave the child out, and the burden falls on the estate to prove otherwise. An omitted child is generally entitled to whatever they would have received under intestacy, taken from the other beneficiaries’ shares.
If this concerns you, update your own estate documents during or after the divorce: your will, trust designations, beneficiary forms on retirement accounts and life insurance, and powers of attorney.
Whether Filing Is Actually Worth It
Having a legal right and using it are separate decisions. Civil filing fees for tort claims typically run from roughly $50 to over $400 depending on where you file. Attorney fees for alienation of affection or emotional distress litigation can reach tens of thousands of dollars, especially if the case goes to trial. Private investigators charge in the range of $20 to $30 per hour at the low end, with experienced surveillance costing considerably more.
The emotional cost is real. Litigating an infidelity claim means depositions, testimony, and a public court record that keeps the wound open for months or years. Many attorneys will say candidly that the financial and emotional return on a tort claim rarely justifies the investment unless the other woman has significant assets and you live in one of the states that recognize the claim.
For most people, the real financial leverage sits inside the divorce: fault grounds where available, dissipation claims for money spent on the affair, favorable spousal support, and a larger share of marital assets. Those remedies are built into the divorce process and address the same underlying harm without a separate suit. A family law attorney in your state can tell you which combination gives you the strongest position based on your facts and local law.