For me, it's not about who's up-to-date on my latest, but more who would be, and would be allowed to be, in a heartbeat if the excrement hit the air conditioning. My best friends are also old friends, junior high, some of them, and are all over the world at this point. We're not up-to-the-minute on each other's lives. But when my friend's marriage was falling apart a few years back, we were all in Colorado to help her sort through the rubble. When I've needed "OMG, someone talk me down" wisdom, these are the people I'd call. The roots run deep.
You wrote: "We’ve never babysat each other’s children and don’t have spouse/boyfriend contact information saved into our phones, we do not share credit cards or keep keys to each others houses..."
My besties wouldn't meet that threshold either.
"...or do more than text each day about social media or television shows and see each other Quarterly."
Yeah, I haven't seen some of mine in a lot longer than that, unfortunately. But if my life were to go to pieces tomorrow? They're the calls I'd make, and I know they'd show up, get caught up, and help me clean up as best they could. And I'd let them, knowing that love is judgment-free, drama-free, and string-free, because they've repeatedly shown me. Trust is built with consistent behavior over time, not recent intensity.