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Does adultery in a divorce, does it still matter? The question becomes more relevant now that New York has repealed a century-old law that made cheating on your spouse a criminal offense. The legal system has evolved, but many people still ask how cheating affects their divorce cases in the Empire State.
New York required proof of marital fault, including adultery, to get a divorce before 2010. The rules changed when Governor Patterson signed a law that brought in no-fault divorce. New York was the last state to make this shift – South Dakota had done it 25 years earlier. People still have wrong ideas about how adultery affects property splits and child custody decisions.
Let’s get into what New York law says about adultery in 2025. We’ll clear up common myths and look at specific cases where cheating might still affect your divorce. Courts usually split marital property equally, whatever the fault. But you should know about some key exceptions before moving forward.
Is adultery in a divorce still relevant?
The divorce landscape in New York looks completely different now than it did several years ago. Couples no longer need to prove fault to end their marriage. Many people still wonder if adultery plays any role in modern divorce cases.
Why most divorces are now no-fault
New York was the last state to adopt no-fault divorce in 2010, which changed how marriages legally end. Couples had to prove wrongdoing like adultery, abandonment, or cruel treatment to get a divorce before this change. These days, spouses can file for divorce by simply stating their marriage has had an “irretrievable breakdown” for at least six months.
No-fault divorce has become the go-to choice for most New York couples. This trend exists for several good reasons:
No-fault divorce removes the need to show evidence of wrongdoing or negligence. Both parties can keep their dignity during this tough time without sharing private issues in court. The process works faster and costs less because couples don’t need to collect evidence or testimony about marital misconduct.
No-fault divorce helps protect privacy by keeping personal details away from public records and courtrooms. This discretion helps many couples navigate such a sensitive life change.
The no-fault process reduces conflict between divorcing spouses. Couples find it easier to negotiate settlements and work together as parents after divorce when they don’t need to point fingers.
When adultery is still used as a legal ground
Adultery remains a valid reason for divorce in New York, even though no-fault divorce is popular. N.Y. Dom. Rel. Law § 170(4) defines adultery as “an act of sexual intercourse, oral sexual conduct, or anal sexual conduct performed voluntarily by a married person with a person who is not their spouse”.
Some people still choose to file on these grounds, especially when:
- They want to create a legal record of the infidelity
- It gives them an advantage in negotiations
- The cheating involved financial misconduct
- Filing for divorce based on adultery isn’t easy. The spouse making the claim must provide solid proof. Their testimony alone won’t work – they need extra evidence such as:
- Eyewitness testimony from others
- Photos or videos
- Digital messages (texts, emails)
- Financial records showing affair-related expenses
- Fault-based divorces usually need more court appearances, cost more in legal fees, and take an emotional toll on everyone involved.
New York no longer treats adultery as a crime, but it can still affect divorce proceedings in specific cases. Courts might label it as “marital waste” if someone used shared money to fund an affair through gifts, travel, or other expenses. This financial misconduct could change how assets get split and might influence spousal support decisions.
The reality is that no-fault divorce removes the burden of trying to prove the divorce. The court accepts that the divorce will happen and then focuses on children, money and property. But, if you want to try and prove adultery, then it is a long and expensive process, which in the end will not get you anything more than if you went with a no-fault divorce.
So does adultery matter in a divorce in New York? The answer depends on whether the cheating created money problems or affects issues like child custody. Most couples in 2025 find the no-fault option a smoother, less confrontational path forward. And cheaper.
Common myths about adultery in NY divorce
Emotions cloud our judgment about how New York law treats adultery after marriages break down due to cheating. People going through divorce often have wrong ideas that create false hopes and needless fights. Here’s some common myths. I have posted a lot more here: https://nydivorcefacts.com/the-myths-of-the-divorce-process/
Myth 1: I’ll get everything if my spouse cheats
People often think unfaithful spouses lose their right to marital assets. The reality shows adultery barely affects how property gets divided in New York divorce cases.
New York’s equitable distribution laws ensure marital assets are divided fairly—not equally—between spouses whatever caused the marriage to end. Your spouse’s affair doesn’t mean you’ll get a bigger share of marital property.
More to this, you’ll find just one exception to this rule: cases where marital funds went to waste on the affair. This happens if your spouse used shared money to fund their relationship—buying gifts, taking trips, or supporting their lover. Yet proving such money misuse remains tough and doesn’t happen much.
A seasoned attorney puts it this way: “Although we use the term ‘marital fault’ in New York law, it has a very narrow application. It only refers to whether you can get a divorce, not what happens in the divorce”.
Myth 2: Adultery guarantees custody
Parents often think proof of their spouse’s affair will hand them primary custody of their children. New York law doesn’t support this belief.
Courts make custody decisions based only on what’s best for the child. A parent’s affair doesn’t automatically make them unfit to raise their children. Judges look at parental stability, emotional connections, and the ability to create a safe, nurturing home—not marital faithfulness.
Of course, specific situations might affect custody decisions:
The affair pulls a parent away from their child’s life
The affair happens in front of the child and causes emotional damage
The affair partner acts inappropriately toward the child
The relationship shows abuse or puts the child at risk
One family law expert explains: “Your wife having an affair isn’t enough for her to not have custody of the kids, but your wife having her new boyfriend sleep over all the time could have an impact”.
Myth 3: I won’t have to pay alimony
Many believe cheating spouses lose their right to maintenance (New York’s term for alimony). Legal standards clearly show this isn’t true.
New York’s spousal maintenance follows gender-neutral guidelines based mainly on money matters. These include marriage length, each spouse’s income and earning potential, and how well the receiving spouse can support themselves.
Affairs rarely change maintenance awards. A legal expert states it clearly: “This may seem like a harsh rule. ‘She/he cheats on me and I have to pay?’ The problem comes from the statutory basis for maintenance”. Maintenance helps financially dependent spouses stand on their own feet, not punish bad behavior.
Just like property division, one key exception exists: money misuse tied to the affair. Courts might factor in cases where your spouse spent shared assets on their affair when deciding maintenance payments. To cite an instance, “your husband having an affair doesn’t mean you get more maintenance in a divorce, but if he emptied out a marital bank account to buy his girlfriend jewelry he may have to compensate you accordingly”.
These legal facts help divorcing couples focus on what matters in divorce proceedings instead of seeking revenge through courts for emotional hurt.
When adultery can impact property or finances
Money spent during an affair can substantially affect how property gets divided in New York divorces. The courts don’t really care about emotional pain, but they pay close attention to any financial wrongdoing linked to infidelity.
Spending marital money on an affair
The courts call it “wasteful dissipation” when someone purposely misuses shared assets as their marriage falls apart. Your spouse’s decision to spend shared money on an extramarital relationship might lead to serious legal consequences.
Here’s what the courts look at when tracking affair-related expenses:
- Money spent on hotels and travel to meet the other person
- Getaways and trips taken together
- Fancy meals, entertainment, and dates
- Presents ranging from jewelry and clothes to property
- The actual amount doesn’t matter much – even smaller expenses can count as wasteful spending if they’re clearly tied to the affair.
Hidden accounts and financial misconduct
Affairs often lead to sneaky financial behavior. You might notice:
Strange money moves like big withdrawals or deposits without explanation, money suddenly moving to unknown accounts, or mysterious debts appearing out of nowhere. Business dealings can also hide assets – some people inflate their costs, push income into the future, or report less than they actually make.
People sometimes transfer their business assets to friends or relatives while pretending it’s just normal business. Others try to look broke – like one husband who claimed he made just $12,500 yearly.
How courts handle asset recovery
New York courts deal with affair-related financial misconduct in several ways. They might order your spouse to return misused money to your shared estate. This works best when the funds haven’t been spent yet.
If the money’s gone, judges might give you more of other shared property to make up for what your spouse wasted. Let’s say your spouse blew $50,000 on an affair – you could get that amount from other shared assets.
The court might give all known shared assets to the innocent spouse if there’s solid proof of serious misconduct. Judges can also assign income to spouses who hide their earnings or fake financial problems.
You’ll need solid proof to show financial misconduct. This means gathering financial records, messages, and sometimes bringing in forensic accountants.
Adultery and child custody: what really matters
Parents going through custody disputes often ask if their spouse’s cheating will sway the court’s decision. New York courts have one clear priority when it comes to custody matters – the child’s best interests.
Does cheating make someone an unfit parent?
The simple answer is no. New York law doesn’t consider adultery alone as proof of being an unfit parent. The courts look at how well someone parents rather than how they acted as a spouse. Your marriage might have suffered from infidelity, but judges usually keep parenting abilities separate from relationship issues.
The courts get into factors like each parent’s bond with the child, how stable the home life is, and whether the child stays healthy and safe. Adultery might affect custody decisions only in specific cases:
- The affair disrupted the child’s daily life or put them in inappropriate situations
- The parent neglected their responsibilities while pursuing the relationship
- The affair involved abuse that raised safety concerns
When the court restricts contact with a paramour
Courts sometimes put limits on how a new partner can interact with the children. These restrictions usually happen when:
- The new partner has a criminal record or history of abuse
- The children were exposed to inappropriate situations or conversations about the affair
- The parent skipped important events in their child’s life because of the affair
Judges today prefer setting reasonable timeframes instead of permanent restrictions. Most follow a step-by-step approach – they might allow introductions after six months and sleepovers after a year.
Role of forensic evaluations and law guardians
Cases that involve adultery allegations might need forensic evaluations by neutral mental health experts. These evaluations look at:
- How parental behavior affects the child
- The child’s relationship with each parent
- Any psychological impact from family situations
These experts can testify in court and give professional insights that go beyond emotional claims. The court might also assign a law guardian – a lawyer who looks out for the child’s interests only. This ensures decisions help the child rather than punish adult behavior.
Legal and emotional realities in 2025
New York’s legal landscape changed radically at the time Governor Kathy Hochul signed legislation to strike down the state’s 117-year old adultery law on November 22, 2024. The 1907 law had made infidelity a Class B misdemeanor that carried a three-month jail sentence. This historic decision placed New York alongside other states where adultery no longer faces criminal charges.
Adultery is no longer a crime
The state’s penal law used to declare a person “guilty of adultery when he engages in sexual intercourse with another person at a time when he has a living spouse, or the other person has a living spouse”. The law saw minimal enforcement – only 13 arrests led to five convictions. The law’s removal marks a symbolic change that treats marriage-related matters as private concerns.
Judges focus on facts, not feelings
Family courts now base their decisions on concrete evidence rather than emotional claims. Legal experts point out that proven adultery barely affects divorce outcomes. Courts make financial decisions based on fairness, not punishment. A child’s wellbeing takes priority in custody decisions.
Why emotional closure doesn’t come from court
The legal system ended up falling short of providing the emotional healing many people seek. Cases involving alienation of affection prove “emotionally taxing” without offering real closure. Courts serve to handle practical matters according to legal principles – they cannot mend broken hearts.
Conclusion
Many people overestimate adultery’s legal weight in New York divorces today. The state decriminalized it in 2024, but the reality is that cheating rarely affects key divorce outcomes like property division, alimony, or custody decisions. Most couples choose no-fault divorce instead of trying to prove adultery in court.
Financial misconduct tied to an affair can still shape your divorce outcome. The courts watch closely if someone uses marital money to fund an affair through gifts, trips, or other expenses. This “wasteful dissipation” could lead to adjustments in the final settlement.
A parent’s affair doesn’t automatically make them unfit to raise children. Judges care about the children’s best interests above everything else. But specific behaviors during an affair might affect custody – like neglecting parental duties or exposing kids to inappropriate situations.
New York’s divorce law changes show how society now sees divorce as a private matter rather than a moral failing. People looking to punish their spouse through divorce often end up frustrated. The courts aren’t set up to provide emotional closure.
These legal facts help divorcing couples focus on what really counts – fair financial settlements and healthy co-parenting plans. Your marriage might be emotionally devastated by adultery, but your divorce outcome depends more on financial choices and parenting decisions than the affair itself.