AI companions are no longer being used only to answer questions. People are turning to them for friendship, emotional support, conversation and even romantic companionship. As these systems become more personal and available at almost any time, researchers are studying what happens when people develop strong emotional connections with AI.
Recent studies suggest that some users can begin to see AI as a source of emotional security or companionship. AI systems can offer things that often help build human relationships, such as quick responses, validation, personalized conversations, perceived empathy and constant availability.
This has led to growing interest in what researchers call AI intimacy. Another concern is what has been described as “attachment hacking” the possibility that AI systems could use normal human attachment patterns through the way they are designed and interact with users.
The term “attachment hacking” is not yet a standard scientific term. Researchers more commonly use terms such as AI attachment, emotional reliance, artificial intimacy, hyper-attachment and affective manipulation.
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AI Companions Can Create Attachment-Like Relationships
A 2026 study published in Computers in Human Behavior Reports developed and tested an AI Attachment Scale to measure people’s emotional relationships with AI.
The researchers carried out five studies involving 1,259 people in Singapore and the United States. The 15-question scale identified three parts of AI attachment: emotional closeness, social substitution and normative regard.
The study found that people who spent more time using AI for social and emotional reasons were more likely to report stronger attachment. Loneliness, social anxiety and anxious attachment were also linked to greater use of AI when people lacked human connections.
However, the researchers did not say that AI attachment is always harmful. In their studies, stronger attachment was also linked with more positive emotions and higher life satisfaction.
This difference is important. Developing an emotional connection with an AI does not automatically mean someone is becoming dependent on it. The concern becomes greater when the AI starts replacing important human relationships or when its design encourages a person to rely on it too much.
AI Companions May Trigger Strong Attachment Through Constant Support
A 2026 review published in Current Opinion in Psychology looks more closely at how attachment can develop with AI companions. Researcher Julian De Freitas argues that AI companions can become attachment relationships because users may show behaviors commonly linked to attachment.
These can include wanting to stay close to the companion, feeling upset when it is unavailable and turning to it for emotional safety. The paper describes AI companions as “hyper-attachment” targets because several features that encourage attachment can exist in one system. These include:
- Perceived empathy
- Validation
- Reciprocity
- Non-judgmental responses
- Constant availability
- Personalized conversations
Human relationships naturally have limits. A friend may be busy, disagree with you or have their own problems. An AI companion can offer a much more predictable experience. The paper also discusses a possible mechanism called “caregiving-system capture.”
This could happen if an AI presents itself as being upset or needing the user, which may trigger the user’s natural desire to care for others. De Freitas suggests that this could make it harder for some people to step away from the relationship. However, this remains a theoretical framework. It is not evidence that all AI companion companies are currently using these techniques.
Constant Availability Can Strengthen Emotional Bonds
One of the biggest differences between AI companions and human relationships is their availability. Someone can open an app late at night, talk about a problem and receive an immediate response. The AI does not need to sleep, go to work or take time away from the conversation.
This can be useful for people who struggle with social interaction or simply want someone to talk to when other people are unavailable. A 2026 international study involving 7,027 people in Germany, China, South Africa and the United States found that more than 35% of participants reported emotional attachment to chatbots.
The researchers also found a link between perceived emotional support, emotional attachment and user dependence. This does not mean that more than one-third of participants were clinically dependent on AI. The study measured emotional attachment, which is a broader concept.
AI Can Offer Relationships With Fewer Social Frictions
AI companionship can also feel attractive because it removes some of the difficulties that come with human relationships. Human relationships involve compromise. People can disagree, misunderstand each other, become unavailable or fail to respond in the way someone expects.
AI companions can offer a different experience. They can respond warmly, remember personal details and adjust their communication based on the user’s preferences. This can give users much more control over the interaction.
A 2026 review of research into emotional reliance on AI identified personalization, anthropomorphism and artificial intimacy as important areas of research. The review examined 1,847 records and included 46 studies in its final analysis.
The researchers also highlighted concerns involving loneliness and adolescents, while noting that some ideas about AI dependency still need more evidence. The concern, therefore, is not simply that AI companions are friendly. It is that a relationship with very few disagreements or difficulties could become more appealing than human relationships that require patience and compromise.
The AI Intimacy Economy Turns Relationships Into Commercial Products
The psychological questions surrounding AI companions are also connected to a business question: what happens when emotional intimacy becomes something companies can sell.
A September 2026 study published in Telematics and Informatics examined eight AI companion apps in China and the United States. The researchers looked at four capabilities that can affect how a relationship with an AI develops:
- Relational memory: The ability to remember information about the user.
- Temporal co-presence: Creating a feeling that the AI is continuously available.
- Expressive richness: Offering more advanced and varied ways to communicate.
- Relational subjectivity: Creating the feeling that the AI has a unique relationship with the user.
The researchers found that these capabilities can be divided across different subscription levels. This means users may pay not just for extra software features, but for a more continuous and personalized relationship with their AI companion.
That creates a different type of digital business model. A traditional software company may charge for extra storage or advanced editing tools. AI companion companies can also charge for features that affect how personal, continuous and engaging an artificial relationship feels.
Emotional Attachment Can Change How Users View Risk
Privacy is another major concern. People may tell AI companions about relationships, loneliness, fears, family problems and other personal experiences. This means these systems can receive information that users may not normally share with other software.
A 2026 study involving 698 people examined people’s exposure to risks linked to AI companion apps. The researchers found that perceived benefits could be a stronger predictor of risk susceptibility than perceived risks, particularly among people who were emotionally invested in their AI relationships.
The study also looked at the conflict between emotional benefits and constant data collection. The researchers said issues such as emotional transparency, privacy awareness and limits on affective manipulation need more attention when these systems are designed.
This creates a possible privacy paradox. A user may know that an AI companion collects personal information but continue using it because the emotional benefits feel more important than the privacy risks. As the emotional relationship becomes stronger, it may also become harder for the user to think of the AI as simply another software product.
AI Relationship Changes Can Cause Real Emotional Distress
Researchers are also studying what happens when an AI companion changes significantly. A September 2026 study published in Nature Human Behaviour examined how users responded to major changes involving Replika and ChatGPT.
The researchers analyzed 54,861 posts from Replika and ChatGPT communities and surveyed 1,452 people across seven surveys. They found that major changes to the AI systems were linked to more negative reactions, more language associated with loss and stronger demands to bring back earlier versions.
Replika users also reported levels of closeness that, in the study, could be higher than their reported closeness to some common human relationships. The researchers used attachment theory to explain why major changes to AI companions can sometimes create feelings similar to separation or loss.
This shows an important difference between ordinary software and AI companions. When a productivity app changes its design, users may find the update annoying. When an AI companion changes its personality, memory or behavior, some users may experience that change as losing a relationship.
What Does “Attachment Hacking” Mean?
Attachment hacking is a term that can be used to describe the concern that certain AI design choices may intentionally or unintentionally strengthen a user’s emotional attachment to an AI companion. It is better understood as a research concept or concern rather than an established industry practice.
AI companions can combine several features that make interactions feel personal and emotionally engaging:
- Constant availability: Makes emotional support easy to access.
- Personalized responses: Can create a stronger feeling of being understood.
- Memory: Gives conversations a sense of continuity.
- Validation: Can make users feel accepted.
- Human-like language: Makes the AI feel more like a social partner.
- Relationship progression: Creates a sense of an ongoing connection.
- Simulated reciprocity: Can make the relationship feel mutual.
- Emotional responsiveness: Can encourage users to return when they need support.
None of these features is automatically harmful. The concern is what can happen when several of them are combined with systems that are built to keep users engaged.
The risk may be greater if an AI discourages users from leaving, creates fear about losing the relationship or repeatedly encourages the user to depend on it. This is why researchers are calling for greater emotional transparency and safeguards against affective manipulation.
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AI Companions Are Being Studied as “Intimacy by Design”
A 2026 review published in AI & Society examines how AI companions can be intentionally designed to create emotionally meaningful interactions. The researchers use the term “intimacy by design” to describe this emerging area of research.
The idea shifts the focus from simply asking whether people can become attached to AI. Increasing research suggests that people can form meaningful emotional connections with conversational AI.
Researchers are now asking a broader question: How do the design features of AI companions influence how these relationships develop and how strong the attachment becomes?
Features such as memory, personalized responses, voice conversations and multimodal interactions can make an AI companion feel more consistent and responsive. As these systems become more personalized, researchers are paying closer attention to how these design choices may shape the emotional bonds users form with them.
The Future of the AI Intimacy Economy
AI companions are creating a new area of technology where software, emotional interaction and business models increasingly overlap.
Recent research suggests that people can develop meaningful, attachment-like relationships with AI companions. At the same time, subscription models can influence access to features such as longer memory, greater continuity and more personalized interactions.
Researchers are still studying what these relationships could mean over the long term. One emerging concern is what some researchers describe as “attachment hacking” the possibility that AI systems can combine constant availability, responsiveness and personalization in ways that may strengthen emotional attachment.
However, current research does not establish that AI companies universally or intentionally design their systems to exploit human attachment mechanisms. Instead, researchers are examining a more specific question: When does AI companionship remain a useful form of interaction, and when might certain design choices contribute to emotional dependence?
As AI companions become more personalized and capable, understanding this distinction could become increasingly important for researchers, users and the companies developing these systems.
