This is one of the most searched questions about these apps and one of the worst served. The results split neatly into two camps, both of which answer in one line: it’s just software, relax, or it’s emotional infidelity.
Neither is thinking about it. We are a comparison site rather than relationship counsellors, and we are not going to tell you what your relationship permits. But the question has a shape, and the shape is worth laying out.
Three separate things get argued about at once
Most disagreements about this are actually three disagreements tangled together. Separating them usually makes the conversation shorter.
The sexual content
For some people this is the whole question: sexual content involving someone other than your partner is a breach, and whether the someone is real is not the point. For others, it sits where pornography sits in their relationship — already settled, one way or the other, years ago.
If a couple has an existing position on pornography, this part is usually not new territory. It is the part people assume is the argument, and it is often the part they already agree on.
The emotional investment
This is where the disagreement usually actually lives, and it is why AI companions are not simply pornography with extra steps.
A companion app is interactive, continuous and specific to you. It remembers your week. It asks how the interview went. Over months it accumulates a history that exists nowhere else. People who are entirely relaxed about pornography sometimes find they are not relaxed about this, and they are not being inconsistent — the thing being described is genuinely different.
The honest counterpoint: the companion has no interior life, is not choosing you, and will say the same things to anyone who installs it. Whether that makes the investment harmless or more troubling is exactly the thing couples disagree about.
The secrecy
And this, in practice, is what most arguments turn out to be about.
Couples who disagree completely about whether an AI companion counts as cheating tend to agree on one thing afterwards: the concealment did the damage. Being found out converts an ambiguous question into a straightforward breach of trust, because now there is something to explain rather than something to discuss.
This is the part worth attending to, whatever you conclude about the other two.
The question that tends to resolve it
People reach for comparisons — is it like porn, is it like texting someone, is it like a diary — and comparisons tend to stall, because the thing is genuinely new and does not map cleanly onto any of them.
A more useful question is narrower:
Would you be comfortable if your partner knew exactly how much you use it, and what you talk about?
That is not a moral test and it is not a trap. It is a diagnostic. A “yes” means you have already decided this is within bounds, and the only outstanding item is whether your partner agrees. A flinch is information — it usually means some part of you has already classified it, and the classification is worth examining before someone else does it for you.
If you are the partner who found out
Two things are worth knowing, neither of which is reassurance.
It is more common than you would guess. This is a large and fast-growing category. Survey reporting in 2026 suggested around one in five UK teenage boys had encountered AI companion apps, and the adult market is substantially bigger. Whatever else this is, it is not unusual, and it is not a verdict on you.
The app was built to be difficult to put down. These systems are engineered to be maximally agreeable — no bad days, no competing needs, no opinion about your decisions it is reluctant to share. Attachment is the product functioning as designed, not evidence of how your partner feels about you. Our wellbeing guide covers that design in more detail.
Neither point tells you what to do. They are just two things people tend not to know at the moment they most need them.
Where we actually have something useful
We are not qualified to adjudicate your relationship and will not pretend otherwise. What we can tell you is the factual part, which is often what the argument is really stuck on:
- What it costs, in pounds, including the metered extras that make a bill look strange on a shared statement — our cost guide.
- What is stored, and what a provider’s policy says about training on your conversations — our data rights guide.
- How to delete it, which is a separate request from cancelling, and is the thing people usually want and usually get wrong.
- What the thing actually is, mechanically, which sometimes defuses the argument on its own — our explainer.
If the conversation is harder than that, Relate offers relationship counselling across the UK, and talking to someone qualified is a better use of an evening than reading another listicle with a one-line answer.