How to keep friendships alive as an adult

At school, friendships happen almost automatically: you see the same people every day. As adults, work, moving cities, relationships and family life change that. Many people notice their circle shrinking — not because they care less, but because time and distance get in the way. The good news is that a few small habits make a big difference.

Friendship takes time — literally

A study by communication researcher Jeffrey Hall, published in 2018, asked adults how many hours they had spent with new acquaintances. His estimates suggest it takes roughly 50 hours together to go from acquaintance to casual friend, around 90 hours to become a friend, and more than 200 hours to become a close friend.

That sounds like a lot, but it explains something important: friendships grow through repeated time together, not one big gesture. Regular, ordinary contact matters more than perfect plans.

Not everyone can be a best friend (and that’s okay)

Anthropologist Robin Dunbar has proposed that people tend to maintain relationships in layers: a very small inner circle of around five people, a wider group of around fifteen good friends, and larger circles of friends and acquaintances beyond that. The exact numbers vary from person to person, but the idea is helpful — you can’t give everyone the same attention, so it’s worth choosing where to invest.

Seven habits that keep friendships going

1. Make it a routine. A monthly dinner, a weekly call or a regular walk removes the effort of planning every time.
2. Send small signals. A photo that reminded you of them, a quick voice note, a “good luck today” — tiny messages keep the connection warm.
3. Say yes when you can. Invitations stop when they’re always declined. If you can’t make it, suggest an alternative date.
4. Be the one who plans sometimes. Friendships fade when only one person reaches out. Take turns.
5. Do things together, not just talk. Cooking, playing a game or taking a class creates shared memories and makes time together easier.
6. Remember what matters to them. Birthdays, interviews, a parent’s health — following up shows you were listening.
7. Allow seasons. Friendships go through busy and quiet periods. A slow year doesn’t mean the friendship is over.

Different friends, different roles

Every group has a mix of personalities. One friend organises everything, another listens, another makes everyone laugh, another is always ready for an adventure. Recognising those roles helps you appreciate what each person brings — and notice when someone who usually reaches out might need you to reach back.

When a friendship drifts

Sometimes friendships end quietly as lives move in different directions. That’s a normal part of adult life. If you miss someone, a simple, low-pressure message — “I was thinking about you, how are you doing?” — is often enough to reopen the door.

Find your role in the group

Curious which kind of friend you are? Our friend-type quiz looks at how you handle birthdays, bad days and group chats, then matches you with one of eight friend roles. Send it to your friends and compare results.