Is it cheating if my partner is in a relationship with an AI?

Short answer: it can be, and you are not making it up.

One survey finding tends to settle the "am I overreacting" question faster than any definition. Researchers surveying 1,815 Canadian adults in 2026 found that roughly half would consider a partner's romantic relationship with an AI companion to be infidelity, and that nearly two thirds of the people using one had not told their partner. That second number is the one worth sitting with. If it genuinely didn't count, it wouldn't need hiding.

Why arguing about whether it counts goes nowhere

You have probably already had this fight, or some version of it. You said it felt like cheating. They said it isn't a person, there's no body, nobody got touched, you cannot cheat on someone with software. And technically, they have a point. There is no one to confront. There is no other name.

But you didn't come here for a ruling. You came here because something dropped in your chest when you read those messages, and now you are being asked to explain, calmly and reasonably, why a thing that hurt you is allowed to hurt you.

That's the trap. Once it becomes a debate about definitions, you lose either way. Win, and you've won an argument. Lose, and you're the unreasonable one who got jealous of a chatbot. Meanwhile the thing that actually happened, which is that your partner took a piece of themselves they used to bring to you and started bringing it somewhere else, never gets discussed at all. Couples hit the same stalemate over whether an emotional affair counts as cheating. The technology is new. The argument is not.

A better test than the definition

Skip "is this technically cheating." Ask this instead: would they have done it exactly that way if you had been sitting right next to them?

Not "would they feel a little awkward." Awkward is normal. The question is whether the behavior itself would have changed. Cleared history. A different tone. An app buried three folders deep. Conversations that stop the moment you walk into the room. None of that is proof of a crime. What it tells you is that your partner already knew where your line was, and made a decision about it without you. People hide what they've quietly decided they would rather not have to defend. That's the same line between privacy and secrecy that shows up in every other version of this, and it holds up here too.

What usually turns out to be underneath it

In the conversations people bring to Maia about this, the AI itself is almost never the interesting part. What surfaces over and over is a particular sentence, some version of: with it, they don't have to manage anyone. It doesn't bring up last Tuesday. It never gets tired, never needs anything back, never has a bad day at the wrong moment. It has no memory of the time they let you down.

So what they found there usually isn't a better partner. It's intimacy with the cost taken out. And the people on the other side of it describe something just as specific: it's not that I'm competing with someone prettier, it's that I'm competing with something that has never once been disappointed in them.

That's the part worth understanding, because it changes what you're actually dealing with. Sometimes this is a person who has been slowly opting out of the relationship. Far more often it's a person who found a place to be warm without being questioned, and kept going back, and never worked out how to say why. It can look a lot like sitting next to someone who isn't really there, except now there's a transcript.

How to bring it up without it turning into a debate about technology

The goal of the first conversation is information, not a verdict. You can decide what it means to you afterward. You will decide better with the truth in hand.

• Lead with the effect, not the charge. "I read them, and I have felt sick since Tuesday. I don't want to argue about whether it counts as cheating. I want to know what you were getting there." That's a question a person can actually answer. "This is cheating and you know it" is a question with only one acceptable answer, so you'll get a defense instead of a reply.
• Ask about the appeal, not the frequency. How often, how long, how many nights: those get you a negotiated number and nothing else. What did it give you that you stopped asking me for? That one gets you somewhere, even when the answer stings.
• Say what you want going forward in specific terms. "I want to know when you use it, and I don't want it to be the place you go first when something's wrong" is a real request with a yes or no. "I want you to not be like this" isn't, and it will get agreed to and quietly ignored.
• Give it more than one conversation. Almost nobody explains this well the first time. The first pass is usually defensive and half true. The second one, a few days later, tends to be the honest one.

Three things that tend to make it harder

Reading everything. You will find more, because there is always more, and none of it will make you feel better. It just gives the images in your head more material to run on.

Turning it into a referendum on AI. The moment the argument becomes whether these apps are pathetic or harmful in general, your partner gets to defend the technology instead of explaining themselves. They will take that exit. Keep it about the two of you.

Deciding what it means before they've told you. "You're in love with it" and "it meant nothing" are both conclusions, and you are currently entitled to neither. Hold the question open a little longer than is comfortable.

What you do with the answer is genuinely yours

Some couples come out of this with a clear agreement and a much more honest picture of what had gone missing between them. Some come out of it knowing something has been over for a while. Both are legitimate. If your partner refuses to discuss it at all, insists your feelings are a malfunction, or agrees to something and keeps going anyway, that is your answer arriving in a different envelope: the problem was never really the chatbot, it's that they aren't willing to be accountable to you. That's the same ground as rebuilding trust after any betrayal, and it takes the same thing to fix, which is the other person choosing to.

There is a real difference between using AI to understand your relationship and using it to avoid one. Most couples have never once said out loud which of those they think is happening, and simply assume the other person agrees. That assumption is usually where this whole thing started.

If you're in the middle of it right now, somewhere between hurt and being told you're unreasonable, it can help to talk it through in detail before you talk it through with them: what you found, what they said, what you actually want to happen next. You can bring the specifics to Maia and work out what you think, on your own, without having to make your case to anyone first.