I have a long term best friend for 20+ years. Have a very close relationship meeting a few times a week for coffee/drink after work, families are close, our boys play sport together, went on vacation a few times together, always helped each other through various things like childcare, a few health issues, airport drops ... closer than any of my immediate family to be honest!
It was absolutely floored to be told she and DH are splitting up. The are very successful, no financial worries, kids in college, and always seemed like a great match for each other.
I wonder how I could have missed something like that with a close friend? I'd consider myself observant....obviously I'm not!
I feel so sad for their family, and disappointed with myself for not being more aware or supportive.