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The Science of Losing Friends to Marriage and Kids: Why Circles Shrink on Schedule

When friends disappear into marriages and babies — or when you're the one who disappeared — the self-talk usually makes it personal: they chose the new life over you, or you failed them. Forty years of network research tells a more structural story: couples withdraw from personal networks in a documented, predictable pattern; friendship networks shrink for nearly everyone after young adulthood; a new partner displaces close-circle members; and about half of anyone's close network turns over every seven years — mostly because opportunities to meet dry up, not because anyone stopped caring. Here's what the data actually shows.

~2close support-circle members are typically displaced when someone takes on a new romantic partner, according to Dunbar's Oxford research group — the partner absorbs the time and attention that maintained those ties 48%of close network members were still in people's networks seven years later in the Dutch panel study — about half the cast of anyone's close circle rotates every seven years while network size stays stable 177,635participants across 277 studies in the Wrzus meta-analysis showing the social network peaks in young adulthood and then declines — friendship-network shrinkage around marriage and parenthood is the documented population norm

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