Should you tell your partner you cheated, and how do you make it right?

End it first

Before anything else, end the other relationship, and end it fully: no last meeting to talk it through, no staying friends, no line left open for later. A short, clear message is enough. While it is still going on, any promise you make to your partner has nothing behind it yet.

If you cannot avoid the other person, because you work together or share friends, keep contact to what is necessary and as public as possible. Bear in mind, too, that they may decide to tell your partner themselves, which is one more reason to think this through soon rather than leave it to chance. If they threaten to tell unless you keep seeing them, or keep contacting you after you have ended it, that is pressure, not a reason to go back: stop replying, and keep any messages in case you need them.

Reasons to tell, and to hesitate

People who decide to tell often say their partner is making choices about their life, whether to stay, to have children, to share a home or money, without knowing something that bears on all of them. Many also point out that secrets of this kind can come out in time, and being found out can hurt more than being told, because the hiding becomes part of the injury. A secret can also keep a distance your partner feels without understanding.

If there was any sexual contact, get tested, and know that your partner's health is a reason to tell in its own right. They cannot protect themselves from a risk they do not know exists, and a clinic can advise on which tests to have and when.

People hesitate for reasons that deserve honesty too: fear of losing the relationship, wanting to spare their partner pain, or a belief that it was brief and is over. Some of those reasons protect your partner, and some mainly protect you, and it is worth being clear with yourself about which is which. Talking it over with a therapist before you decide can help you see your reasons clearly, without anyone making the choice for you.

How to tell

If there is any chance your partner could react with violence, plan for that first, as the end of this section describes. Otherwise, choose a private time when neither of you has to be anywhere, not the night before a big event and not by message. Say it near the start rather than circling toward it: "I need to tell you something serious. I was involved with someone else, and it's over." Then give the essential facts in one honest account, rather than letting them emerge bit by bit over the following weeks.

Take responsibility in plain words. "I did this" lands very differently from "it just happened" or "we'd been so distant." Problems in the relationship may be real and worth talking about later, but not as part of this conversation, where they will sound like an excuse. Do not shrink it either: "it was only a few times" or "it didn't mean anything" asks your partner to feel less than they do. Answer their questions honestly, and where you genuinely do not know, admit it rather than guessing.

If you fear your partner could react with violence, do not tell them alone. Talk to the National Domestic Violence Hotline first about how to do it safely, which might mean telling them by phone, somewhere other people are nearby, or with a plan for where each of you will stay that night. Whatever their reaction, let it be theirs. They may want you to leave the room, or the house for a few days, and this is not the moment to ask to be forgiven.

What making it right tends to involve

Repair often asks things of you that are easier to promise than to keep up. If the other person gets in touch, tell your partner yourself, the same day, rather than waiting to be asked. For a while, mention the small things unprompted, such as who you had lunch with or why you are running late, so your partner is not left to piece them together. When the same question comes back yet again, answer it calmly, without "I already told you." And try not to let your guilt become something your partner has to look after: it is yours to work through, not theirs to soothe.

Let your partner set the pace, even when it feels slow to you. Asking to be forgiven, or asking when things will be back to normal, can land as one more thing they have to manage. If they want couples counseling, find a counselor who works with infidelity and go willingly. Consider a therapist of your own as well, to understand why it happened. That understanding is not an excuse, but your partner may need it from you, and it can be what gives a promise that it will not happen again some weight.

If they decide to leave

Your partner may decide the relationship cannot continue, now or after months of trying. That is their decision to make, just as staying would be. Pleading, bargaining or bringing in friends and family to argue your case tends to add to the hurt rather than change the answer.

If it ends, keep taking responsibility in how you handle what follows: be fair and prompt about practical arrangements, keep any children out of the middle, and see a mediator or family lawyer about a shared home, money or custody. Guilt and grief can sit side by side, and a therapist can help you carry both and work out what you want to do differently.