I have lots of acquaintances who I see all the time for beers/chats, but I also have 3 guys who I call my best friends. It’s these 3 guys I ring when I want to discuss anything personal because I know these guys won’t judge or make our conversation public and they know my life’s high & lows for past 30+ years.
Two of these guys don’t even live locally so 95% of our catch ups are over the phone and it can go months between our chats, but when we do catch up it’s never awkward and it’s like we only spoke last week.