Divorce for fault: proof and consequences according to the Rennes Court of Appeal

Mr and Mrs D., a couple living in Thonon-les-Bains for fifteen years, are going through a painful separation. He accuses his wife of having had an extramarital affair for several months; she denies it and claims it was only a friendship. Both parties are seeking a divorce, but each alleges the other's fault. Who is right? How does a judge decide between these accusations?

This is the question every spouse facing a conflict-ridden separation asks: what acts can justify a divorce for fault? Is irrefutable proof required? The decision handed down by the Rennes Court of Appeal on 20 April 2024 (Case No. RG-14127) sheds light on these crucial points: it recalls that the fault must be serious and continuing, and that the burden of proof lies with the person alleging it. Nothing less than straightforward.

In this article, I analyse the judges' reasoning and explain, in plain language, what this decision means for your situation – whether you are the petitioning or defending spouse, and wherever you live, from Bonneville to Annecy.

The facts: a story like many others

Mr X, a travelling salesman living in Bonneville, and Mrs Y, a town hall employee in Thonon-les-Bains, have been married for twenty years. In 2022, Mr X discovers messages on his wife's phone referring to a romantic meeting. He confronts her, but she denies any infidelity. Tensions rise, arguments follow, and in January 2023, Mrs Y leaves the marital home taking the children. Mr X then files a petition for divorce for fault, alleging adultery (extramarital relationship) as a serious violation of marital duties (fidelity, respect, cohabitation). Mrs Y, for her part, also petitions for divorce for fault, accusing her husband of repeated psychological violence.

The Annecy Judicial Court, at first instance, dismisses both petitions for divorce for fault and grants a divorce on the ground of irretrievable breakdown of the marriage (a no-fault divorce, noting that cohabitation has ceased for more than one year). Dissatisfied, both spouses appeal to the Rennes Court of Appeal. The stakes are high: if fault is established, the guilty spouse may lose the right to a compensatory payment (financial assistance paid by the other spouse after divorce) and may be ordered to pay damages (compensation for the harm suffered).

On appeal, Mr X produces screenshots of text messages and testimonies from mutual friends attesting to the affair. Mrs Y, for her part, provides medical certificates and neighbour statements describing verbal abuse. The Court examines each piece of evidence carefully, but emphasises a key point: adultery must be established by objective evidence, not mere suspicion. As for psychological violence, it must be sufficiently serious and repeated to constitute a violation of marital duties.

After deliberation, the Court delivers its judgment: it confirms the dismissal of Mrs Y's petition for divorce for fault due to insufficient evidence of psychological violence. However, it finds that the text messages constitute proof of adultery, and that this behaviour, by its duration (several months) and concealment, amounts to a serious and repeated violation of marital duties. Divorce for fault is therefore granted on the sole fault of Mrs Y. Consequently, Mrs Y loses her right to a compensatory payment and must pay €5,000 in damages to her ex-husband for moral harm.

The court's reasoning – explained

To understand the decision, one must refer to Article 242 of the Civil Code. This provision (the legal basis for divorce for fault) states that divorce may be sought by a spouse in the event of a serious or repeated violation of the duties and obligations of marriage, making the continuation of married life intolerable. Marital duties include fidelity (Article 212 of the Civil Code), cohabitation (living together), respect, and support. Judges must assess the seriousness of the violation in light of the circumstances.

In the case decided by the Rennes Court of Appeal, the judges recalled two key principles. First, the burden of proving the fault lies with the person alleging it. In other words, it is for Mr X to prove adultery, and for Mrs Y to prove psychological violence. The court found that Mrs Y's text messages, exchanged with a male friend over several months, contained clear admissions (romantic meetings, declarations of love). This constituted sufficient evidence. Second, the fault must be serious and continuing. A mere friendship or an isolated lapse is insufficient: the violation of duties must be serious enough to make married life impossible. In this case, the adultery lasted several months, which was deemed serious. In contrast, Mrs Y's statements described isolated arguments, without a repeated pattern, and the medical certificates did not mention proven psychological after-effects. The court therefore dismissed her petition.

This decision is in line with the settled case law of the Court of Cassation (the highest French court). It is neither a reversal nor a major development, but a classic application of the rules. Its interest is educational: it shows how judges evaluate evidence and what they consider serious fault. Note: the court also verified that Mrs Y's fault was indeed the cause of the breakdown of the marriage. If Mr X had himself committed faults, the divorce could have been granted on shared fault (both spouses at fault), with different financial consequences.

In conclusion, remember that a divorce for fault is not granted lightly. It requires solid evidence and a proven violation of marital obligations. Without that, the divorce will be granted on a no-fault basis (irretrievable breakdown) or by mutual consent, with less punitive effects.

What this means for you – practically

Whether you are in Thonon-les-Bains, Bonneville or elsewhere, this decision has immediate practical consequences.

If you are the petitioning spouse (the one alleging fault), you must gather tangible evidence. Suspicion is not enough. Evidence may include text messages, emails, testimonies, bailiff's reports (a formal record drawn up by a public officer), or dated photographs. But be careful: evidence obtained unfairly (e.g., by hacking your spouse's account) may be excluded by the judge. In the case, the text messages were on the wife's phone, but Mr X obtained them lawfully (by showing the screen to a witness). Tip: keep copies of messages and note the dates and times.

If you are the defending spouse (the one accused), you can challenge the evidence if it is doubtful or obtained illegally. You can also show that the fault is not serious (e.g., an occasional relationship without consequences) or that your spouse himself committed faults. In that case, the divorce may be granted on shared fault, which cancels certain consequences (such as loss of the compensatory payment).

Financial consequences: A divorce granted on the sole fault of one spouse deprives that spouse of the compensatory payment (a payment intended to compensate for the disparity in living standards after the divorce). He or she may also be ordered to pay damages (here €5,000). However, that spouse retains rights to the community property (division of assets). For example, if you own a house in Annecy with your spouse, the divorce for fault does not affect your share, unless the judge decides to award the home to the other spouse to protect the children.

Timeframes: The divorce for fault procedure typically takes 12 to 18 months at first instance, plus 6 to 12 months on appeal. Legal fees can range from €3,000 to €8,000 depending on complexity.

Four tips to avoid this type of dispute

• Keep all evidence from the first signs of conflict. Save messages, back up emails, note dates and circumstances. Later, it will be harder to reconstruct. A client from Bonneville lost his case for failing to keep the SMS – do not make the same mistake.
• Do not give in to provocation. If you are accused, do not respond with insults or threats. That could constitute a fault on your part (psychological violence). Stay calm and consult a lawyer promptly.
• Prioritise family mediation before going to court. A mediator (a neutral professional) can help you reach an agreement on the consequences of the divorce (children, property). This often avoids a long and costly procedure. In Thonon-les-Bains, several mediators are accredited.
• Do not wait to act. The claim for divorce for fault is subject to a 30-year limitation period from knowledge of the facts, but the longer you wait, the more evidence disappears. If you discover infidelity, act within weeks.

Further reading: related case law and developments

The Rennes Court of Appeal follows a consistent line of case law. The Court of Cassation, in a decision of 15 January 2020 (No. 18-26.789), had already held that adultery, even if not continuous, can justify a divorce for fault if it is sufficiently serious given the circumstances (e.g., public, humiliating relationship). In another case (Civ. 1re, 12 June 2019, No. 18-16.234), the high court specified that psychological violence must be established by medical evidence or consistent testimonies – which was lacking in our case.

There is a trend among courts to require increasingly solid evidence, particularly for psychological violence, to avoid unfounded accusations. This means that judges are cautious, but also that victim spouses must carefully document their ordeal. In the future, recognition of psychological violence may strengthen with societal change, but for now, proof remains difficult to provide.

Summary and next steps

FAQ: questions you may have

Can I petition for divorce for fault if my spouse is cheating on me? Yes, if the adulterous relationship is proven and it is serious (repeated, concealed, etc.). A one-night stand may not be sufficient.

What if I have no written proof? You can request a bailiff's report (e.g., to film a meeting in a public place) or gather testimonies. But avoid illegal methods.

How long do I have to act after discovering the fault? There is no statutory time limit, but it is advisable to act quickly to avoid losing evidence or having your claim considered stale.

Does divorce for fault affect child custody? Not directly. The child's best interests are paramount: fault rarely influences residence arrangements, unless it involves danger (e.g., violence).

How much does a divorce for fault procedure cost? Expect €3,000 to €8,000 in legal fees, plus court costs (bailiff, expert). Legal aid is available subject to income conditions.

In summary: this decision confirms that divorce for fault is a double-edged sword. Before considering it, weigh the pros and cons. A quick consultation with a specialised lawyer can clarify matters.

Are you in a similar situation? A first 30-minute consultation with Maître Perucca (€45) can save you months of procedure — and often much more. Book an appointment →