My Wife Is Having an Affair. What Can I Do? A Husband’s Complete Legal Guide for 2026.

By Advocate Karan Dua | Vintage Litigation, New Delhi | Published: July 2026

He already knew. But knowing and being able to do something about it are two very different things.

By the time most husbands in this situation sit across from me, they have already spent weeks on the internet looking for answers to a cluster of questions that nobody seems to give a clean, honest answer to: Can I divorce her on the grounds of the affair? Will her adultery reduce what I have to pay in maintenance — or cut it off entirely? Can I do anything to the man she’s been involved with? And what can I actually use as evidence, given that I found out through a WhatsApp conversation I may or may not have been supposed to see?

This article answers all of those questions, updated for 2026 — including a September 2025 Delhi High Court ruling that opened up a legal remedy that didn’t previously exist in India: the right to sue the third party directly for damages.

1. Adultery Is No Longer a Crime — But It Still Has Major Legal Consequences

The most important thing to understand before anything else: since the Supreme Court’s landmark 2018 ruling in Joseph Shine v. Union of India, adultery is not a criminal offence for civilians in India. You cannot go to the police and file an FIR against your wife or the man she is involved with purely on the basis of the affair. The new Bharatiya Nyaya Sanhita (BNS) 2023, which replaced the Indian Penal Code, confirmed this by omitting adultery as a criminal offence entirely.

This does not mean you are without legal recourse. It means your remedies are civil and matrimonial — and they are substantial. A wife’s affair can affect your divorce case, her entitlement to maintenance, child custody arrangements, and — through the new remedy discussed below — it may even give you a cause of action against the third party directly.

2. Your Divorce Grounds: Two Strong Paths That Can Be Used Together

Path A — Adultery Under Section 13(1)(i) HMA

The Hindu Marriage Act, 1955, still recognises adultery as a direct and standalone ground for divorce under Section 13(1)(i). A husband can file a divorce petition on the ground that his wife had voluntary sexual intercourse with a person other than himself after the solemnisation of the marriage.

The proof standard is civil — preponderance of probability, not proof beyond reasonable doubt. Courts do not require direct evidence of a sexual act (which, practically speaking, is almost never available and courts do not expect it). Strong circumstantial evidence establishing that the relationship was of an intimate or sexual nature is sufficient.

Path B — Mental Cruelty Under Section 13(1)(ia) HMA

Even where direct proof of the affair is difficult to establish at the level required for an adultery finding, the conduct surrounding an affair almost always independently constitutes mental cruelty under Section 13(1)(ia) HMA. Courts have consistently held that the following, when established with evidence, constitutes mental cruelty as a divorce ground:

• Openly conducting an affair with disregard for the husband’s feelings or dignity
• The wife abandoning the matrimonial home to be with a third party
• Publicly humiliating the husband by flaunting the relationship
• Denying the husband physical or emotional intimacy while maintaining a relationship with another person
• Repeatedly lying about the affair after being confronted
• Making false allegations against the husband to justify the affair

Mental cruelty is often the more practically powerful ground because its evidentiary threshold is more accessible. The pattern of conduct, not just the sexual relationship, becomes the evidence.

My standard advice to clients: plead both adultery and cruelty in the divorce petition, giving the court two independently valid grounds. Even if adultery cannot be fully established on the evidence available, the cruelty case is almost always made out from the surrounding conduct.

3. The New Remedy: Alienation of Affection — Can You Sue the Third Party?

This is the most significant development in this area of law in India in 2025, and it is barely known outside specialist matrimonial practice.

In September 2025, the Delhi High Court in Shelly Mahajan v. Bhanushree Bahl & Anr. held that a civil suit for Alienation of Affection is maintainable in India.

In plain terms: you can now file a civil lawsuit against the third party — the person who had an affair with your wife — seeking monetary damages for having deliberately interfered in your marriage and alienated your spouse’s affections.

This cause of action has existed in some common law jurisdictions (notably in some US states) for over a century but had never been expressly recognised by an Indian court as maintainable. The Delhi HC’s September 2025 ruling changed that, at least within Delhi’s jurisdiction, and the ruling has since been cited as persuasive authority in other courts considering similar claims.

What this means practically:

You can, simultaneously with your divorce petition, file a civil suit against the third party in a civil court of appropriate jurisdiction, seeking damages for the harm caused to your marriage by their deliberate interference. This suit is entirely separate from the divorce proceedings — it is not against your wife, it is against the person who actively participated in the affair.

What you need to establish in this civil suit:

A valid, subsisting marriage at the time of the interference. Evidence that the defendant (the third party) had an intimate relationship with your wife. Evidence that this relationship was a material cause of the breakdown of your marriage or alienated your wife’s affection from you. And some evidence of the harm you suffered — emotional, reputational, or financial consequences of the interference.

Limitations to be aware of:

This is a civil damages suit, not a criminal complaint — it will take time and require litigation. The quantum of damages is at the court’s discretion and depends on the evidence of harm. The ruling is currently Delhi High Court level — it has not yet been confirmed by the Supreme Court. And practically, this suit makes most sense where the third party has assets or reputation that make the damages claim meaningful. An experienced matrimonial lawyer should assess whether it is strategically worth pursuing in your specific situation alongside the divorce.

4. Maintenance and the Wife’s Affair — The Section 125(4) BNSS Question

This is the question every husband in this situation asks me: does her affair mean I don’t have to pay maintenance?

The honest answer is: it depends on what can be proven and how it is proven, but a wife found to be “living in adultery” can be disqualified from maintenance under the BNSS.

Section 144 BNSS (which replaces Section 125 CrPC) allows a court to order maintenance for a wife who is unable to maintain herself. Section 144(5) BNSS (previously Section 125(4) CrPC) contains an important disqualification: a wife is not entitled to maintenance if she is “living in adultery.”

Courts interpret “living in adultery” as a continuing relationship — not a single past incident. The threshold is deliberate and high: an isolated historical infidelity that has ended is generally not enough to trigger the disqualification. What matters is an ongoing intimate relationship with a third party at the time of the maintenance claim.

How to establish this in court:

This is where digital evidence and circumstantial proof become critical. Courts have accepted:

• WhatsApp messages and call records showing the nature and continuity of the relationship
• Tower location data placing both parties at the same location at relevant times (specifically accepted in a 2025 Kerala HC ruling)
• Medical records or counselling notes where the wife or her treating professional acknowledged the relationship
• Witness testimony from people with personal knowledge of the relationship
• Financial records — unusual expenditure, hotel bookings, shared expenses that do not involve the husband

The standard for establishing “living in adultery” in a maintenance proceeding is civil — preponderance of probability. Courts look at the totality of circumstantial evidence, not any single piece.

An important caution: making false or unsubstantiated allegations of adultery in maintenance proceedings, if not supported by evidence, can backfire. Courts have held that false adultery allegations themselves constitute mental cruelty — which in a contested case can be used against the person making the allegation. Do not raise this ground unless the evidence genuinely supports it.

5. Evidence: What Works in 2026, and What Doesn’t

This is the most operationally important part of this guide, because the quality and legality of your evidence determines whether any of the above remedies can actually be pursued.

Evidence that Indian courts accept in 2026:

WhatsApp messages, emails, and social media direct messages — provided they are obtained from a device to which you have legitimate access (your own phone, a shared family device). Courts accept these as circumstantial evidence of the nature of the relationship, not proof of a sexual act.

Call records — obtainable through your telecom service provider in some circumstances, or through the court’s own process in litigation.

Photographs and videos — provided they were obtained without illegal interception. Photographs taken in public places, screenshots of social media posts, images shared on family devices.

Hotel records, travel bookings, shared financial transactions — admissible as circumstantial evidence of shared presence and shared activity.

Witness testimony — from people with personal knowledge, including friends, family members, neighbours, or workplace colleagues who directly observed the relationship.

Tower location data — recent court rulings (Kerala HC, 2025) have accepted cell tower data showing that two devices were in the same location at relevant times as corroborative circumstantial evidence.

Evidence that creates legal problems:

Recordings made by covertly placing a device in someone else’s private space (their room, their vehicle) without consent. Evidence obtained by hacking into a device or email account. Illegally intercepted communications.

This is a nuanced area. The law on privately obtained call recordings and WhatsApp messages is still evolving — we addressed this in our earlier article on secret call recordings as evidence. The general principle is that evidence obtained through illegal interception of communications may be rejected by courts and may also expose you to separate legal liability. Get advice on what you have before deciding how to use it.

Tower location data, a powerful but underused tool:

The 2025 Kerala High Court ruling on adultery established that tower location data — showing that two mobile devices were consistently in the same location during relevant periods — can be accepted as corroborative circumstantial evidence. This is an increasingly useful tool in cases where WhatsApp messages are not available or are disputed, because location data does not depend on the content of conversations.

6. The Impact on Child Custody

A wife’s affair does not automatically disqualify her from custody of the children. The overriding principle in all child custody disputes is the welfare of the child — courts assess which parent’s home provides the more stable, nurturing, and consistent environment for the child’s day-to-day life, emotional development, and education.

However, specific conduct arising from or connected to the affair can become relevant in a custody assessment:

• If the wife has prioritised the relationship over the children’s daily needs — missed school events, erratic presence, reduced involvement in the children’s routine
• If the affair partner has been introduced to the children in a way that has caused confusion or distress
• If the wife has abandoned the matrimonial home and the children’s primary care has shifted to the husband during the separation

None of these automatically determine the outcome, but they are factual matters that courts weigh as part of the welfare assessment.

7. What to Do in the First 48 Hours

If you have just discovered or confirmed your wife’s affair, the following practical steps matter immediately — before any legal filing:

Document what you know, in a form you can preserve. Take screenshots of relevant messages or evidence from devices you legitimately access. Preserve this independently and securely — not just on the shared family devices.

Do not confront her in a way that alerts her to delete evidence. A confrontation that prompts evidence deletion happens frequently and leaves cases with significantly less to work with than they would have had.

Do not take any action that could be characterised as domestic violence or harassment. Any conduct that can be framed as threatening or physically aggressive — however understandable the emotional reaction — creates an immediate strategic vulnerability and can result in a counter- complaint under the Domestic Violence Act or Section 85 BNS that complicates your own proceedings significantly.

Consult a matrimonial lawyer before filing anything. The sequencing of what you file first — divorce petition, maintenance proceedings, or the Alienation of Affection civil suit — affects how each proceeding plays out. Getting the order right, and the grounds correctly pleaded, is the single biggest factor in determining how the case develops.

How Vintage Litigation Can Help

Advocate Karan Dua has represented husbands in divorce proceedings, maintenance disputes, and complex contested matrimonial matters where a wife’s extra-marital conduct is a central issue. Whether you are assessing your evidence, planning a divorce petition on adultery and cruelty grounds, defending a maintenance claim where the wife’s affair is a live disqualification issue, or exploring whether the new Alienation of Affection civil suit is viable in your specific situation — we can give you a clear legal assessment and a coordinated strategy.

Online first consultation. Fully confidential. No commitment required.

📞 Call / WhatsApp: +91-9999483959 📧 Email: Adv.karan.dua67@gmail.com 📍 O-11A, Basement, Jangpura Extension, New Delhi – 110014 ⏰ Monday–Saturday, 9 AM – 6 PM. WhatsApp available after hours.

Frequently Asked Questions

Q1. Can I file a criminal case against my wife or her affair partner?

No. Since the Supreme Court’s 2018 ruling in Joseph Shine v. Union of India, adultery is not a criminal offence for civilians. The new BNS 2023 confirms this. You cannot file an FIR against your wife or the third party solely for the affair. Your remedies are civil — divorce on adultery/cruelty grounds, maintenance disqualification under Section 144(5) BNSS, and potentially the new Alienation of Affection civil suit against the third party.

Q2. What is the Alienation of Affection civil suit and can I file it?

In September 2025, the Delhi High Court held in Shelly Mahajan v. Bhanushree Bahl & Anr. that a civil suit for damages against the third party who interfered in a marriage — alienating a spouse’s affections — is maintainable in India. This means you can potentially file a separate civil lawsuit against the man your wife was involved with, seeking monetary damages for the deliberate harm caused to your marriage. This remedy is new, Delhi-specific at the High Court level, and requires careful strategic assessment before filing. Consult a matrimonial lawyer who is aware of this ruling before deciding whether to pursue it.

Q3. Does my wife’s affair mean she gets no maintenance?

Possibly. Under Section 144(5) BNSS, a wife who is “living in adultery” is not entitled to maintenance. But this requires proof of an ongoing relationship — not just a historical affair that has ended. The standard is civil (preponderance of probability), but courts look for specific, corroborated evidence: messages, call records, tower location data, witness testimony. A bare allegation without evidence will not succeed and may backfire.

Q4. What evidence can I actually use in court?

Courts accept: WhatsApp messages and emails from devices you legitimately access; photographs and social media screenshots; hotel and financial records; call records; witness testimony; and cell tower location data (confirmed in 2025 Kerala HC ruling as corroborative circumstantial evidence). Evidence obtained through illegal interception or hacking may be rejected and can expose you to separate legal liability.

Q5. Can I get a divorce on the grounds of my wife’s affair?

Yes, on two independently available grounds. First, adultery under Section 13(1)(i) HMA — voluntary sexual intercourse with a person other than her husband. Second, mental cruelty under Section 13(1)(ia) HMA — the conduct surrounding the affair almost always independently constitutes cruelty even without conclusive proof of the sexual act. Most experienced lawyers plead both grounds together. The civil standard of proof (preponderance of probability) applies — not criminal proof beyond reasonable doubt.

Q6. Does the affair affect who gets custody of our children?

Not automatically. Custody is decided on the welfare of the child, not as punishment for a parent’s conduct. But if the affair has directly disrupted the children’s care — reduced daily involvement, introduction of a third party in a confusing or distressing way, or abandonment of the matrimonial home — those are specific facts the court weighs in the welfare assessment. Document these impacts specifically, not just the affair itself.

Q7. My wife is saying she’ll file a 498A if I proceed with divorce. What do I do?

This threat is common and reflects the tactical use of criminal proceedings in contested matrimonial disputes. If you believe a false 498A complaint may be filed, speak to your lawyer about anticipatory bail immediately — before any complaint is registered. Also start building your documentary record: a clean factual account of the marriage, the affair, and your own conduct throughout. Our earlier guide on facing false allegations covers the specific protective steps available to you.

Q8. Can I use the affair as grounds for increasing maintenance in my wife’s petition against me — or does the adultery disqualify her?

She may be disqualified from maintenance entirely if she is “living in adultery” — Section 144(5) BNSS. But this requires proof of an ongoing relationship, not just a historical incident. The timing matters: was the affair ongoing at the time she filed the maintenance claim? Courts examine this question specifically. If the relationship has ended and she is not currently living in adultery, the disqualification argument is weaker — though the affair may still be relevant to the quantum of maintenance the court decides to award.

Q9. The affair partner is a colleague of my wife. Can he face any professional consequences?

It depends on the nature of his employment. For civilians working in private organisations, there is generally no professional consequence purely for a consensual affair. However, for members of the armed forces, paramilitary services, or certain government departments, adultery can still attract disciplinary action under applicable service rules — the Supreme Court confirmed in 2023 that the 2018 decriminalisation ruling does not prevent disciplinary action under armed forces enactments.

Q10. I found out through her phone that she has been having an affair. Can I use the screenshots I took?

It depends on how the phone was accessed. Screenshots taken from a device you jointly own or legitimately used are more defensible than evidence obtained from a device you do not have authority to access. The legal position on privately obtained digital evidence is nuanced — our article on secret call recordings and digital evidence covers this in detail. Get legal advice before relying on any evidence you obtained without explicit consent, because the manner of collection can affect admissibility and can create legal risks for you.

Adv. Karan Dua — Advocate, Delhi High Court | Matrimonial & Family Law Adv. Karan Dua is a Delhi-based advocate specialising in contested divorce, adultery and cruelty proceedings, maintenance disputes, and complex multi-forum matrimonial litigation. He practises before the Delhi High Court and family courts across the NCR. Learn more about Vintage Litigation or get in touch.