You did not cause the affair. That is the short answer, and it is worth saying plainly before anything else, because the sentence you keep hearing — "You drove me to it," "You weren't there for me," "If you'd given me more affection, this wouldn't have happened" — is designed, whether your partner means it that way or not, to make you carry something that was never yours to carry. This article is mainly for you, the betrayed partner being blamed — and also for the partner who cheated and catches themselves blaming. It does not decide whether you should stay together or separate. That decision is yours, and it does not need to be made today.
Here is the longer answer, and it matters just as much: you may have a real share in the problems your relationship had before the affair. Most couples do. Owning that share honestly is part of repair. But your share of the marriage problems and responsibility for the affair are two different things, and blame-shifting is what happens when someone treats them as if they were the same.
Why blame-shifting happens
Blame after an affair is rarely a calm, considered argument. It is usually a defence. Terry Real's work on shame, defensiveness, and accountability describes the pattern clearly: when a person feels the full weight of what they have done, shame can be unbearable, and the fastest relief is to spread it around. "I did something terrible" becomes "We were both terrible" becomes "You made me do it." Each step makes the speaker feel a little less alone with the guilt — and leaves the betrayed partner holding more of it.
Dave Carder, writing on confession, accountability, and forgiveness after adultery, makes a related point: genuine accountability means owning the choice without redirecting the conversation to the other person's faults. When the conversation keeps sliding from "I had an affair" to "but you were distant / cold / always working / never interested," that slide is the tell. The affair stops being the subject, and you become the subject.
There is also a simpler reason blame appears: your partner may genuinely believe it. Scott Haltzman's work on why affairs happen shows that affairs almost never have one cause. Unhappiness, loneliness, opportunity, a willingness to keep secrets, a habit of avoiding hard conversations — these stack up together. A person who has never examined that stack honestly will reach for the nearest, simplest explanation, and the nearest explanation is usually you. That does not make it true.
And sometimes blame is a way to stop a conversation that feels unbearable. Serine Warwar's research on emotional processing after interpersonal injury shows how hard it is to stay with hurt, anger, and grief without either shutting down or striking back. If every attempt to talk about the affair ends with your partner turning the focus onto your failings, the conversation is not really about your failings.
The one line: your share is real, and it is not the affair
This is the distinction everything else in this article depends on, so it is worth drawing carefully.
Your share of the marriage problems. Before the affair, your relationship may have had real problems, and you may have contributed to some of them. Maybe you withdrew when things got hard, stopped noticing your partner, or let the distance grow because addressing it felt hopeless. Maybe sex faded, or kindness faded, or you both became more like housemates than partners. Owning that — honestly, without exaggeration and without minimising — is part of being a grown-up in a relationship. It is also, when the time is right, part of rebuilding one.
Responsibility for the affair. The affair was a series of choices made by one person: to confide in someone else instead of you, to keep the contact secret, to cross lines, to continue after the first crossing, to hide it afterwards. At every one of those points there were other options — talking to you, talking to a friend, talking to a counsellor, ending the relationship, or simply not doing it. Frank S. Pittman's clinical work on deception and responsibility in affairs is blunt on this point: whatever was wrong in the marriage, the decision to deceive was the deceiver's. Unhappiness explains why someone might want change. It does not explain, or excuse, choosing secrecy and betrayal as the way to get it.
Gerald R. Weeks's intersystems framework helps hold both truths at once: a relationship has individual, relational, and emotional dimensions, and all of them matter. You can look honestly at the relational dimension — what was happening between you before the affair — without letting it swallow the individual dimension, which is the choice one person made. Nancy Gambescia, writing with Weeks, makes the same point from the accountability side: relational accountability means each person owns their own part, not that each person owns half of the other's choices.
Here is a test you can use when the blame lands and you are not sure what to do with it:
1. Could I have done something different in the marriage? Almost always, yes. That is your share, and it is worth looking at — later, calmly, and on your own terms.
2. Did my behaviour force, require, or make inevitable the affair? No. Your partner had other options at every step, including the option of telling you the truth about being unhappy. "I was lonely" is a real feeling. "So I had to cheat" is not a logical step from it — it is a leap your partner chose to make.
3. Is this conversation about the marriage, or about the affair? Both conversations need to happen. But they are not the same conversation, and they cannot happen at the same time. When your partner answers a question about the affair with a complaint about the marriage, the affair conversation has just been closed. Notice that, and name it.
If you find yourself thinking "maybe they're right, maybe I am the cause," you are not alone in that thought. Peggy Vaughan, who spent decades working with betrayed partners, wrote about how powerfully the secrecy and deception of an affair can make the betrayed partner feel responsible — as if, had they only been different, the whole thing would not have happened. That feeling is a normal response to being deceived. It is not evidence that you caused it.
What honest accountability looks like instead
If blame is the thing that stalls repair, it helps to know what the opposite looks like — so you can recognise it when it appears, and name its absence when it does not.
Owning the choice without a "but." Real accountability sounds like this: "I chose to have the affair. I kept it secret. I understand why that broke your trust." It does not sound like: "I'm sorry, but you were never around," or "I take responsibility, but you have to admit your part too." Anne Bercht's work on accountability in affair recovery stresses that the unfaithful partner's first job is to take complete ownership of the affair itself — before, not after, any discussion of pre-existing marriage problems. The marriage conversation comes later, when trust has some ground to stand on. Leading with "but you…" reverses the order and makes repair impossible, because the betrayed partner is being asked to apologise for the conditions while still bleeding from the injury.
Tolerating repeated questions. Mark H. Bird's research on how couples move through healing after infidelity describes accountability as something demonstrated over time, not declared once. A partner who is genuinely accountable expects the same questions to come back, sometimes for months, and answers them without turning the questioning itself into an accusation.
Transparency without being asked to perform it. Jake Porter's couple-centred recovery framework treats accountability as something both partners' experiences matter to — but it is explicit that the injured partner's need for safety comes first. Transparency means the unfaithful partner volunteers openness — about whereabouts, about contact with the affair partner, about what happened — rather than offering it only when caught or only in the smallest possible dose.
Separating the marriage conversation from the affair conversation. A partner who is doing the work can say, at the right time: "I want us to talk honestly about what was wrong between us before the affair, because I don't want us to rebuild on the same cracks. But that conversation doesn't change the fact that I chose to cheat, and I'm not bringing it up to explain the affair away." That is the difference between discussing pre-affair problems and weaponising them.
What to say when the blame lands
You do not need a perfect speech. You need a few steady sentences you can use in the moment, before the conversation turns into a fight about who was the worse partner. For more on keeping these conversations from escalating, see How to Talk About the Affair Without It Turning Into a Fight.
Try something like this:
"I hear that you were unhappy, and I am willing to talk about what was wrong between us. But I did not make you have an affair. You had other choices, and I need you to own that before we can talk about my part. When you say I drove you to it, the conversation about the affair stops, and I am left carrying blame for your choice. I won't do that. We can talk about the marriage — after you own the affair."
A few things to notice about that script. It does not deny your share. It does not call your partner a bad person. It does not accept the blame, and it does not return it. It draws the line and then offers the next step: first the affair, then the marriage.
Bonnie Eaker Weil's work on communication and forgiveness after infidelity makes a useful distinction here: forgiveness and repair are processes, not single events, and they cannot be rushed past the accountability stage. Spencer B. Olmstead's research on how therapists help couples move toward forgiveness after infidelity finds the same thing: when the unfaithful partner has not yet fully owned the betrayal, pushing toward forgiveness or "moving on" does not heal anything. It just buries the blame where it keeps working quietly.
If the conversation does escalate anyway — raised voices, old grievances, both of you talking past each other — stop. Say so plainly: "We're not getting anywhere like this. Let's come back to this tomorrow, at a set time." A paused conversation is not a failed conversation. A conversation that ends with you apologising for being cheated on is worse than a pause.
When blame means repair is stalled — not that it is impossible
Blame-shifting is a sign that repair is stalled. It is not proof that repair cannot happen. The distinction matters, because it tells you what to do next.
Watch for the pattern, not the single incident. One defensive remark in the first week after discovery is human. A pattern over weeks or months — every conversation about the affair redirected to your faults, every apology followed by "but," every question treated as an attack — is a stall.
Don-David Lusterman's work on the immediate crisis after discovering an affair emphasises boundaries in this phase: when couple-level work keeps collapsing into blame, the useful move is often to pause the joint work rather than force it. That does not mean giving up. It means each of you works on your own part separately for a while — the betrayed partner on stabilising and getting support, the unfaithful partner on understanding why they chose secrecy and blame instead of honesty — with qualified human support if you can get it. Couple conversations resume when the unfaithful partner can talk about the affair without redirecting it onto you.
Marnie Breecker's work on betrayal trauma puts the reason plainly: the injured partner's experience has to be validated before repair can begin, and validation is impossible while blame is still on the table. If your partner cannot yet say "I hurt you, and it was my choice" without adding a qualifier, then the foundation for rebuilding is not there yet — and no amount of discussing pre-affair marriage problems will put it there.
If you are the partner who cheated and you recognise yourself in this article, that recognition is itself a starting point. Notice the moment the "but you…" forms in your mind, and try the harder sentence instead: "I chose this. Tell me what it did to you." You do not need to have all the answers about why you did it. You need to stop handing the reason to your partner.
A next step that is yours, whether or not your partner changes
You cannot force your partner to stop blaming you. You can decide what you will carry, and what you will do next.
First, write down the line for yourself — in your own words, somewhere private: what was my share of the marriage problems, and what was their choice? Keep it short. Return to it when the blame starts to stick, because blame works best when it is vague. A written line is harder to move than a feeling.
Second, get one place outside the relationship where your experience is believed without being cross-examined — a therapist experienced in betrayal trauma, a trusted friend who will listen without pressuring you to stay or leave, a support group. If the only person telling you what happened is the person who is also blaming you for it, your sense of reality will keep wobbling.
Third, decide what you will do the next time blame lands, before it lands. Pick one sentence from this article — the script above, or your own version of it — and use it the same way each time. Repetition is not rudeness. It is a boundary: "I have answered that. My answer has not changed."
If you want a private place to work through what is yours and what is not, RenuuAI — a private AI recovery coach — can help you sort through the blame, practise the conversation, and take one manageable next step at a time, with a personalised recovery roadmap and guided sessions you can turn to between appointments. It does not decide for you whether to stay or leave. It helps you think clearly while you decide.
The short version
You may have a share in what was wrong in your marriage. You do not have a share in the decision to have an affair. Blame-shifting collapses those two things into one, and as long as they stay collapsed, repair cannot move — because the person who needs to own the choice is still arguing about who caused it.
Draw the line, calmly and more than once if you have to: my part of the marriage, yes; your choice to cheat, yours. Then watch what happens next. A partner who can meet you at that line is a partner repair can begin with. A partner who cannot is telling you, honestly, where the work stands — and your next step is yours to take either way.
Sources
- Terry Real — I Don't Want to Talk About It and Relational Life Therapy work on shame, defensiveness, and accountability (book/model citation, no URL)
- Frank S. Pittman — Private Lies: Infidelity and the Betrayal of Intimacy (book citation, no URL)
- Don-David Lusterman — Infidelity: A Survival Guide (book citation, no URL)
- Peggy Vaughan — The Monogamy Myth (book citation, no URL)
- Anne Bercht — Work on affair recovery, accountability, and emotional stabilization through Beyond Affairs (model/program citation, no URL)
- Scott Haltzman — The Secrets of Surviving Infidelity (book citation, no URL)
- Gerald R. Weeks — Treating Infidelity: An Integrative Approach (book citation, no URL)
- Nancy Gambescia — Treating Infidelity: An Integrative Approach (book citation, no URL)
- Dave Carder — Torn Asunder: Recovering from an Extramarital Affair (book citation, no URL)
- Bonnie Eaker Weil — Adultery: The Forgivable Sin (book citation, no URL)
- Spencer B. Olmstead — Research on therapists' experiences helping couples move toward forgiveness following marital infidelity (research citation, no URL)
- Serine Warwar — Research on forgiveness and emotional processing following interpersonal injuries (research citation, no URL)
- Mark H. Bird — The Process of Couple Healing Following Infidelity (research citation, no URL)
- Marnie Breecker — Work on betrayal trauma, validating the injured partner's experience, and emotional safety (model/research citation, no URL)
- Jake Porter — Couple-Centered Recovery framework (model citation, no URL)