I'm almost sure that at my funeral someday, this is the memory that my kids will laugh about: "Remember how after we fought, Mom used to make us say, 'I love you' and 'Lukes are best friends'?"
I'm okay with that.
I make no secret of the fact that one of my main parenting goals is to keep them close . . . perhaps to a fault. I make sure they know that even when they're married and have kids of their own, they need to touch base with their siblings . . . all of them . . . at least once a week.
They might not have chosen each other, but they'll always be the friends who have known them the longest. I want them to confide in each other. I don't even care if they help each other keep secrets from us (kind of). When one of my kids tattles on another, I often say, "Remember . . . you're all on the same team."
Maybe they'll all grow apart and lose touch when they get older. But it won't go down without a fight from their Mama.