What Makes a Best Friend, According to Gen Z — And What It Tells Brands About Loyalty

Loyalty over longevity: our Best Friends Survey found that Gen Z defines closeness by reliability rather than shared interests, and that has consequences for how brands earn it.

When we asked Gen Z what makes someone a best friend, the answer wasn't shared history, shared hobbies, or time served. It was loyalty, named by 43% of respondents, more than any other quality. Shared interests barely registered. Adolescent Content surveyed our network of Gen Z YouthTellers, the global community of young consultants who give us real-time insight on culture and behavior, about who they call their best friend and why. The pattern that emerged says as much about brand loyalty as it does about friendship.

A best friend, as distinct from a general friend, is the person considered emotionally closest and most trusted in someone's social circle. The bond is marked by higher vulnerability, more frequent contact, and a sense of chosen family. Unlike casual friendships, the title tends to be earned through consistency rather than compatibility.

At a Glance

• Loyalty was the single most-named quality that makes someone a best friend, cited by 43% of respondents.
• Shared hobbies and interests ranked only moderately important, well behind loyalty, unconditional support, honesty, and empathy.
• 100% of respondents said there's a real difference between a "friend" and a "best friend." It's not just a bigger word for the same thing.
• 86% said you can have more than one best friend; only 14% believe the title should go to just one person.
• Becoming best friends can take a few weeks or several years. Respondents overwhelmingly agreed it depends on the "click," not the timeline.

FAQ

What does Gen Z friendship data tell brands about loyalty? That loyalty is built on reliability, not affinity. Loyalty was the most-named quality defining a best friend at 43%, while shared hobbies and interests ranked only moderately important. Gen Z rewards consistent showing-up over shared taste.

Do shared interests drive Gen Z loyalty? Less than most targeting strategies assume. Respondents ranked shared hobbies and interests as only moderately important to a best friendship, behind loyalty at 43%, unconditional support, honesty, and empathy. Shared interest gets a brand considered; it doesn't get it kept.

How often does a brand need to show up to stay close to Gen Z? Frequently and unobtrusively. 57% of respondents talk to their best friend at least once a day, and 71% prefer texting over any other channel. Respondents also singled out unprompted check-ins as a marker of real closeness.

How long does it take to earn Gen Z's loyalty? There's no fixed timeline. Respondents described everything from a few weeks to several years, and nearly all said it depends on the emotional "click," not the calendar. That argues against treating loyalty as a fixed-duration campaign outcome.

Do Most People Have a Best Friend?

Here's the reassuring part: most people we surveyed said yes. The majority described having a best friend they "love to death," while a smaller group felt they were somewhere in between — close, but not quite at best friend status yet.

Notably, even respondents without a confirmed best friend said they wanted one. Nobody in the survey said they were fully uninterested in having that kind of closeness. If anything, the data suggests that wanting a best friend is close to universal, and that finding the right match is the part that takes work. That reframes the absence of a best friend as a timing issue rather than a character flaw.

Can You Have More Than One Best Friend?

An overwhelming 86% of respondents said the more best friends, the merrier, with several describing multiple people who each hold the title for different reasons. One respondent put it simply: it's about “knowing who will give you the right advice at the right time.”

Only a small minority disagreed, arguing that the best friend title should be reserved for exactly one person. For them, exclusivity isn't about limiting closeness. It's about what the title represents. One respondent described her best friend as “family by choice,” the one who is “the first person you call with good news, bad news, or even the most random things because you know they'll always have your back.”

For most young people, then, best friends work more like a small trusted council, each person filling a slightly different role depending on the situation. One for career advice, one for late-night venting, one who's simply known you the longest. Both approaches came across as equally valid ways of organizing closeness rather than one being more "correct" than the other.

Is There a Difference Between a Friend and a Best Friend?

This question received a resounding yes: all 100% of respondents agreed that a friend and a best friend are not interchangeable. The consistent theme across answers was vulnerability. A regular friend is someone you enjoy spending time with, while a best friend is someone you tell everything to, and who tells you everything back.

Several respondents described their best friend in familial terms: “like a sibling,” “family by choice,” someone who feels less like a peer and more like a permanent fixture in their life. That sibling framing echoes what we found when we asked about male-female friendships, where 68% of respondents reached for the same comparison. That emotional depth, more than shared history or proximity, is what separates the two categories.

How Long Does It Take to Become Best Friends?

If you're hoping for a clean answer here, there isn't one, and that's kind of the point. Timelines ranged from a few weeks to several years, and almost nobody thought there was a "correct" amount of time required to be someone's best friend.

It's worth noting where that time tends to get spent. School — elementary through college — was by far the most common place respondents met their best friend. What's striking is how little of the rest of school survives alongside that one friendship. When we surveyed our network about class reunions, 60% said they were barely connected to anyone from their graduating class and 66% felt they'd outgrown that version of themselves. The building produces one lasting relationship and not much else.

What matters more than the clock is the click. Respondents repeatedly described a specific moment of realization, a point where trust clicked into place, rather than a slow accumulation of shared time. As one respondent put it, becoming best friends “just depends on the person” and “if you guys click.” Some traced that click to a single conversation, a shared hardship, or an inside joke that stuck; others said it crept up on them so gradually that they couldn't name a start date at all. Either version was treated as legitimate.

Timeline & Trust Snapshot

• Top quality that defines a best friend — Loyalty (43%), followed by unconditional support
• How much shared interests matter — Only moderately important
• Can you have more than one best friend? — 86% said yes
• Is there a real difference between “friend” and “best friend”? — 100% said yes
• Most common way people met their best friend — Through school (elementary through college)
• Preferred way to talk to a best friend — Texting (71%) over phone calls

How Often Do Best Friends Talk?

More than half of respondents (57%) said they talk to their best friend at least once a day, and a notable number check in multiple times daily. Texting was the clear favorite at 71%, whether through standard messaging or social media platforms, with phone calls trailing behind for those who prefer hearing an actual voice.

A few respondents also mentioned an unspoken habit of checking in without being asked. One respondent described this as simply making sure the other person is “doing okay without the other person asking.”

That quiet consistency came up again and again as a marker of real closeness. It's a small behavior, but it tracks with the broader theme running through the survey: best friendship isn't defined by grand gestures so much as by low-effort, high-frequency signals that someone is still paying attention.

What Quality Matters Most in a Best Friend?

When asked to pick just one defining trait, respondents most often landed on loyalty, named by 43%, followed closely by unconditional support, honesty, and empathy. Shared hobbies and interests ranked as only moderately important.

That gap is the most useful finding in the survey. For the people we asked, a best friendship is built on emotional reliability rather than matching interests. It's not about doing the same things together; it's about knowing someone will show up the same way, every time. If there's a single throughline connecting every section of this survey, the multiple-best-friends question, the "click" over the calendar, the unprompted check-ins, it's that Gen Z respondents consistently prioritized dependability over the markers people might expect, like history, proximity, or overlapping interests.

What Does This Mean for Brand Loyalty?

Put two of these findings next to each other and something useful falls out. Loyalty was the most-named quality that defines a best friend, at 43%. Shared hobbies and interests ranked only moderately important, behind loyalty, unconditional support, honesty, and empathy. For the people in this survey, closeness is not built on having things in common. It's built on someone being reliably there.

That's close to the opposite of how most brand affinity work is structured. Interest-based targeting, taste-matching, community organized around a shared hobby: all of it assumes common ground is the foundation and consistency is a nice-to-have layered on top. Our respondents describe the reverse. Common ground is how the relationship starts. Reliability is what earns the title.

Three things follow from that.

Consistency beats intensity. 57% of respondents talk to their best friend at least once a day, and the behavior they singled out as a marker of real closeness wasn't a grand gesture, it was checking in without being asked. The brand equivalent is unglamorous: showing up regularly and being useful, rather than concentrating spend in campaign bursts and going quiet in between.

The channel matters as much as the message. 71% prefer texting over any other method of staying in touch. The preference is for low-effort, low-friction contact in the place they already are. A brand that requires a Gen Z customer to come to it is asking for more effort than their closest relationships demand.

Loyalty doesn't run on a schedule. Respondents put the timeline anywhere from a few weeks to several years, and nearly all of them said it depends on the "click," not the calendar. That's an awkward finding for anyone who needs loyalty to arrive by the end of a quarter, but it's a useful correction: the variable to manage is consistency, not duration.

None of this means shared interests are worthless. They're how most of these friendships started, and school was the most common origin story precisely because it puts people in the same place doing the same things. The point is narrower and more useful than that. Shared interest is an entry condition. Reliability is what converts it.

Want to go deeper on how young people build loyalty and connection? Read our five rules for Gen Z branding (adolescentcontent.com/blog/our-5-rules-for-gen-z-branding), or get the wider picture of what Gen Z wants from brand marketing (adolescentcontent.com/blog/what-gen-z-brands-get-right).

Want research like this for your own brand? Adolescent Content runs proprietary surveys with our YouthTeller network to tell you what young people think, not what trends on social media. Get in touch at adolescentcontent.com