When you or they leave a group, list three to five people to keep, reach out to each within 30 days, and set recurring reminders.
The idea
For some relationships, the group was the whole thing, and that's ok. Others were real friendships that happened to start in a shared context: the people you grabbed a beer with after the meeting, or actually told the truth to. Once the group is gone, so is the natural trigger to reach out. Those friendships deserve a specific attempt, with an intentional trigger replacing the organizational one.
How to do it
Before you leave, or right after, write down the three to five people from that group you want to stay close to.
Reach out to each one individually within 30 days.
Keep it simple and specific, referencing actual history (see Script).
Set a reminder to check in every few months.
Example
A friend of mine left a group we'd both been part of for years, expecting to stay connected with the people. What he got was radio silence.
Script
"Hey, I've been thinking about our conversation last year about X. How's that going for you?"
Watch out for
No mass "hey let's stay in touch" message and no vague "we should grab lunch sometime."
If you're the one who left, a voice will say it's weird to reach out now. Ignore it. A shared experience doesn't belong to the organization that created it.
Relatable: In Relatable you can put those three to five people in a sphere with a check-in cadence so it nudges you when you've gone quiet. A recurring calendar reminder is the low-tech version. How-to: Create and organize spheres, Set how often you want to stay in touch.
Related frameworks
Don't Confuse Circumstance With Strategy: Relationships kept alive by school, work or community fade when that context ends, unless you replace the shared setting with intention.
The Recurring Calendar Invite: After a good conversation, make it a repeating calendar event, with a mutual, guilt-free permission to cancel any single one.
Reconnecting After a Long Silence: Skip the apology. Send a short note that they came to mind, ideally with one real detail or shared memory, and leave the ball in their court.
Seasons of Your Network: Diagnose your season (planting, nurturing, harvesting or hibernating), match your effort to it, and give yourself permission to say no when it's winter.