For nearly two decades now, attachment theory has dominated popular discussion of romantic relationships. The framework, originally developed by John Bowlby and Mary Ainsworth in the mid-twentieth century to describe how young children form bonds with caregivers, was extended by Hazan and Shaver in 1987 to adult romantic relationships and then popularized for mass readership by Amir Levine and Rachel Heller’s Attached in 2010. The basic categories — secure, anxious, avoidant — have become so familiar in dating discourse that they now show up in the captions of strangers on the internet, as a kind of common shorthand for explaining why people behave the way they do in love.

What has gotten less attention is that attachment theory was not, originally, only about romantic love. It was about the broader phenomenon of close emotional bonds between humans. The research that has accumulated over the past two decades has made fairly clear that the same attachment patterns that operate in romantic relationships also operate in close friendships — including, importantly, the friendships of adult men. A 2005 study by Grabill and Kerns, replicated and extended several times since, found that secure attachment enhances friendship intimacy along several specific dimensions: self-disclosure, responsiveness to a friend’s disclosure, and the felt sense of being understood and cared for during conversations. More recent work, including a 2024 study on friendships in emerging adulthood, has shown that anxiety with a best friend predicts lower friendship quality, mediated by reduced support-seeking — a finding that mirrors closely what we see in romantic relationships.

For most adult men, this is useful information they have never been given. The reason some friendships stay at the surface for decades while others reach a level of mutual knowing that becomes one of the more sustaining features of a life is not, mostly, about luck or chemistry or personality. It is, in significant part, about the attachment patterns each man brought to the friendship and the ways those patterns are operating, often invisibly, in the texture of how the friendship is conducted. Understanding the patterns is the first move toward changing the relationships they have been shaping.

A quick refresher on what the styles actually are

It is worth a brief grounding in the basic categories, because the popular versions of these have sometimes drifted from the actual research.

Secure attachment describes a pattern in which a person is comfortable with both closeness and autonomy. He can be deeply connected without feeling threatened by the connection, and he can be apart from others without feeling abandoned by their absence. Secure people tend to be able to ask for what they need, receive what is offered, tolerate the inevitable ruptures of close relationships without catastrophizing, and trust that their friends and partners will mostly be there in the ways that matter. About half to sixty percent of adults are estimated to be in this general category, though the exact figures vary across studies.

Anxious attachment describes a pattern in which closeness is desired but never quite trusted. The anxious person tends to need a lot of reassurance, to be hyper-attuned to signals that the other person might be pulling away, and to experience small fluctuations in the connection as more threatening than they actually are. In friendships, this can show up as the person who is intensely engaged when things are going well and quietly destabilized when the friend is busy, distant, or simply going through his own thing. The friendship feels precarious to him in ways it usually is not.

Avoidant attachment describes a pattern in which closeness is itself the threat. The avoidant person tends to maintain emotional distance even within ostensibly close relationships, to be uncomfortable with vulnerability either offered or received, and to withdraw when a relationship starts to deepen in ways that require more emotional intimacy. In friendships, this can show up as the person who is good company but never quite shares anything significant, who deflects when conversations turn personal, who maintains an active social life that nevertheless feels strangely thin to anyone trying to actually know him.

Disorganized or fearful-avoidant attachment is a more complex pattern combining elements of both anxious and avoidant tendencies. Closeness is both desired and feared, and the person tends to oscillate between pursuing and withdrawing. In friendships, this can produce confusing patterns — the friend who is intensely close for stretches and then mysteriously distant, with the alternation having more to do with his own inner state than with anything happening between you.

These categories are not destiny. They describe patterns, not fixed traits, and the patterns can shift over time, particularly with deliberate work or with sustained relationships in which the more secure capacities are practiced. They are also not exclusively gendered — the popular caricature that connects avoidance to men and anxiety to women does not hold up in the data. The full range of attachment styles shows up in both men and women, with significant individual variation.

How attachment patterns shape male friendship specifically

The application of attachment theory to friendship has some specific implications that are worth thinking through. A few of the more common patterns:

The secure friendship. Two reasonably secure men, befriending each other, tend to build a particular kind of relationship over years. They can be genuinely present with each other without either having to manage the other’s emotional state. They can disclose meaningful things without either of them flinching from the disclosure or making it heavier than it needs to be. They can tolerate the natural ebbs and flows — the months when one of them is busy with work or family — without either party feeling abandoned or threatened. The friendship deepens over time because both of them are capable of letting it deepen.

The anxiously-attached friend. A man with anxious attachment, in friendship, often reaches more than the friendship can comfortably hold. He texts more than the other man texts him. He notices, with greater attention than is useful, every small fluctuation in the friend’s responsiveness. He may feel slighted by silences that the friend did not intend as silences. The friendship is often real and meaningful to him; it is also a source of low-grade anxiety in ways that the friend may not realize. If the anxious friend can recognize the pattern in himself, the friendship can stabilize considerably; if he cannot, the pattern often produces the very distance he was anxious about, as the friend on the receiving end of the over-reaching gradually pulls back.

The avoidantly-attached friend. The avoidant pattern in male friendship is especially common because it is so well-camouflaged by certain cultural scripts about how men relate to each other. The man who never gets personal in his friendships, who keeps every conversation at the level of work or sports or politics, who has known the same group of guys for twenty years without any of them knowing what is actually going on in his life, is often operating from a pattern of avoidant attachment. The avoidance reads, from outside, as normal male reserve. From inside, for the avoidant man himself, it is often a defensive maneuver against a closeness that feels threatening even when he consciously wishes for it. The pattern is sustainable. It is also the reason many men, in their forties and fifties, find that their friendships feel hollow despite their apparent abundance.

The mixed-pattern friendship. Friendships often involve two people with different attachment styles, and the dynamics that result can be predictable once the styles are recognized. The anxious-avoidant pairing is especially common: one friend pursues, the other withdraws, and the pattern reinforces itself in ways that frustrate both. The anxious friend interprets the avoidant friend’s distance as confirmation that the friendship is precarious; the avoidant friend interprets the anxious friend’s pursuit as confirmation that closeness is dangerous. Neither is wrong about what the other is doing. Both are reading it through a lens that makes the pattern worse. The anxious-avoidant trap is usually discussed in the context of romance, but the same dynamic shows up in friendship, and recognizing it as a friendship dynamic can be illuminating for men who have wondered why a particular friendship has been so frustrating for so long.

Why this is especially worth attending to in male friendship

There is a specific reason attachment patterns matter more in male friendship than they have often been acknowledged to matter. Male friendships, on average, have fewer external structures supporting them than female friendships do. They do not, in most cases, involve the regular phone calls and elaborate check-ins that characterize many close female friendships. They depend more heavily on each man’s willingness to actively maintain the connection, to reach out, to make plans, to make space for the friendship in a life dense with other demands.

This means that attachment patterns have more room to operate without correction. The anxious man’s overreaching has less external structure to push against. The avoidant man’s withdrawal has less external structure to interrupt. The pattern, whatever it is, runs more freely than it would in a more elaborate social architecture. Over years, this produces friendships whose quality is more determined by the underlying patterns than the men involved often realize.

It also means that the small attachment-driven moves in any given month — the text not sent, the visit declined, the disclosure deflected — accumulate more meaningfully than they would in friendships with more structural reinforcement. A close female friendship can absorb several months of avoidant-style behavior without taking much damage because the structure of the friendship has enough other supports. A male friendship operating on lower-frequency engagement to begin with can be substantially damaged by the same pattern, because the texture of the relationship is thinner and each missing piece counts for more.

Maintaining adult friendships is, on this reading, partly the work of recognizing one’s own attachment patterns and counteracting them deliberately — particularly for men whose patterns lean toward the avoidant, which is a meaningful fraction of the male population in many modern Western contexts.

What the secure capacities actually look like

If insecure attachment patterns produce friendships that stay thinner than they could, then the question worth asking is what secure capacities actually look like in practice. The answer is more specific than “be secure” — which is not useful instruction. The capacities can be named and practiced:

The capacity for ordinary closeness. Being present with the friend in unremarkable ways. Texting when something reminded you of him. Making the plan that maintains the rhythm. Calling, sometimes, without an agenda. The small acts of ordinary closeness, repeated over years, are most of what builds the substrate of real friendship. The avoidant pattern interrupts these without seeming to. The secure capacity sustains them without making them dramatic.

The capacity to disclose without flinching. Being able to tell the friend what is actually going on with you, in some real way, when it matters. Not constantly. Not in a way that turns every encounter into a therapy session. But at the appropriate moments — when something significant is happening, when you are struggling, when you have something to share that requires the friend’s actual attention. The disclosure does not have to be lengthy or dramatic; it just has to be honest enough to give the friendship something real to be in relationship with.

The capacity to receive disclosure without managing it. When the friend tells you what is going on with him, being able to receive it without immediately problem-solving, deflecting, or turning the conversation back to yourself. This is the listening skill discussed elsewhere, and it functions in friendship the same way it functions in any other close relationship. The friend who can receive disclosure well is the friend other men eventually trust with what matters.

The capacity to tolerate the silences. Real friendships have stretches where nothing much is being exchanged. The friend is busy. You are busy. Months go by without much contact. The secure capacity is the ability to hold the friendship through these stretches without interpreting the silence as the friendship’s failure. The anxious pattern catastrophizes these silences. The avoidant pattern uses them as evidence that the connection was not real anyway. The secure pattern simply holds the friendship steady, knowing that the active phases will return.

The capacity to repair after small ruptures. Even close male friendships have ruptures. The misunderstanding. The unintentional slight. The drift that needs to be addressed. The secure capacity is the willingness to actually bring up what happened and address it, rather than letting the rupture sit unaddressed and slowly degrade the friendship. This is the same repair skill that operates in marriage, applied to friendships. It is rarer in male friendship than it should be, and its presence is one of the strongest predictors of friendships that survive decades.

The work of shifting

If you recognize an insecure pattern in your own friendship life, the question becomes what to do about it. The honest answer is that attachment patterns are not changed by deciding to change them. They are changed by sustained practice of the secure capacities, often in the presence of relationships that allow the practice to happen.

For the anxious pattern, the work is usually some combination of internal self-regulation — noticing when you are reading more into a silence than is there, recognizing when your reach for reassurance is your attachment system asking for something rather than the actual situation requiring it — and the deliberate practice of tolerating the spaces in friendships without trying to close them. The anxious pattern relaxes, over time, when the man inside it has accumulated enough experience of friendships that survive the spaces. The accumulation requires deliberate non-action at moments when the old pattern would have prompted reaching.

For the avoidant pattern, the work is usually the harder direction — the deliberate practice of small disclosures, the deliberate maintenance of friendships through the texture of ordinary contact, the deliberate willingness to receive what friends are offering rather than holding it at a distance. The avoidant pattern relaxes when the man inside it has accumulated enough experience of closeness that did not, after all, destroy him. The accumulation requires the deliberate exposure to the very thing the pattern was protecting him from.

For the mixed or disorganized pattern, the work is often longer and may benefit from the support of therapy or other structured contexts where the patterns can be worked with more deliberately. The instability of the pattern requires more sustained attention to develop the consistency that secure capacities are built on.

In all cases, the work is partly individual and partly relational. The friendships you have are part of how your patterns develop. The friend whose own secure capacities are strong is a gift to your work, because his consistency provides a stable container in which your less-secure patterns can begin to relax. The friendship in which both of you are working on this is a context in which substantial growth becomes possible over years.

What changes when the friendships deepen

For the man who develops some of these capacities, the friendships in his life change in ways that are hard to anticipate from outside. The friendships that were already there often become more substantial; the friend who has been somewhat distant from the avoidant pattern starts, gradually, to share more, because the friendship has become safe enough to share into. New friendships have a different quality; the man is now capable of forming connections that go deeper than his previous patterns would have allowed.

The cumulative effect on the man’s life is significant. The loneliness that many men describe in midlife, even when they have plenty of acquaintances, is often the loneliness of friendships that have not been able to deepen because of attachment patterns the man was unaware of. As the patterns shift, the loneliness diminishes — not because the man has acquired more friends, but because the friends he has have become friends in a fuller sense than they were before.

Building social wealth over decades is, on examination, mostly the slow accumulation of friendships that have been allowed to deepen through the work both parties have done on their own capacities. The wealth is not in the number. It is in the texture. Three or four friendships that have gone deep enough to actually sustain a man through the harder years of his life are worth more, on any honest accounting, than several dozen friendships that have stayed comfortably at the surface.

The patterns are workable. The capacities are learnable. The friendships, given the work, can become what they have the potential to be — not just companionable acquaintances, but the actual close relationships that turn out to matter as much, in the end, as almost anything else a man builds in his life.