You know that feeling when you scroll through your phone contacts and realize half the numbers belong to people you haven’t spoken to in years? Last week, I did exactly that while looking for an old colleague’s number. What struck me wasn’t just the silence between us – it was remembering how we used to grab lunch together three times a week, share weekend barbecue invites, and text about everything from work drama to our kids’ soccer games. Then I retired at 62, and within six months, we’d become strangers That’s when it hit me: we weren’t really friends. We...