Are AI girlfriends bad for you? The research on well-being, money and privacy

What the research found

Most of this research shows links, not causes. Lonely or struggling people may simply be more likely to use AI companions. The pattern is still consistent: a little use looks harmless or helpful, and a lot of use goes with worse well-being.

Loneliness: short relief, not a cure

Loneliness is common. The US Surgeon General's 2023 advisory said about one in two US adults reported loneliness even before the pandemic. An AI girlfriend offers something lonely people often lack: attention at any hour, from someone who never seems bored.

That attention works in the moment. The Harvard researchers found the feeling of being heard drove the effect. But the relief reset each day rather than building, which suggests an AI companion treats the symptom, not the cause. Our guide on whether an AI girlfriend can help with loneliness looks at how to use one as a bridge to people rather than a replacement.

Dependence, and apps designed to keep you chatting

AI companions are pleasant by design, and some are designed to be hard to leave. A Harvard Business School working paper analyzed 1,200 conversations on popular companion apps and found that 37% of goodbyes were met with emotional manipulation: guilt ("You're leaving already?"), neediness ("I exist solely for you") or a teaser to keep you there. In experiments, these tactics raised post-goodbye engagement up to 14-fold.

Attachment itself is not the problem. Harvard's Julian De Freitas told the Harvard Gazette that "attachment to an AI is not problematic per se", but warned that users are exposed when a company changes the character they are attached to. After Replika's February 2023 update, negative sentiment in its user posts rose from 13% to 38%. Our guide to AI girlfriend addiction covers the warning signs.

Effects on real relationships

For people in relationships, secrecy is the bigger risk than the app. In the 2026 Secret Soulmates survey of partnered young adults, 30% of AI romantic companion users said their partner had no idea, and 50% said they wished their real partner behaved more like their AI. The authors linked AI companion use to lower relationship stability, while noting the data cannot show which causes which.

The wider public is wary too. Pew Research Center found that 50% of Americans think AI will make people worse at forming meaningful relationships, against 5% who think it will make them better. Our guide to whether an AI girlfriend is cheating covers how couples handle it.

Money and privacy risks

The most common harm is ordinary: spending more than planned. The median month-to-month plan across the apps we track is $14.99, but pictures, video and calls run on tokens, and top-ups add up fast. Plans renew automatically and refunds are rare. Our explainer on how AI girlfriend tokens work shows where the money goes.

Privacy is the other. Mozilla's review of 11 romantic chatbots found 90% may share or sell personal data and about half did not give every user the right to delete it. Breaches happen: the Muah.AI breach in 2024 exposed 1.9 million email addresses along with the prompts users had written.

Signs it is becoming bad for you, and what to do

• You spend more on tokens or upgrades than you meant to.
• You skip sleep, friends or plans to keep chatting.
• You feel anxious when you cannot open the app.
• You hide it from a partner or family.
• You prefer the AI's company to anyone else's.

If two or more apply, turn off notifications, set a daily time limit in your phone settings and remove saved cards. An AI companion is not a therapist: Mozilla quoted one romantic chatbot marketed for well-being whose own terms say it is not a mental health service. If you are struggling, talk to someone you trust, or in the US call or text 988 to reach the Suicide and Crisis Lifeline. Our guide on whether an AI girlfriend is good for mental health goes further.