One of my best friend's from college is married to the girl he met & dated in school. We all know each other, I was in their wedding, etc.

At one point, I noticed she & I were no longer friends. I figured I may have said something that angered or offended her (sometimes, my friends & I have extended social/political discussions & we don't hold back).

Fast forward a few months...she & I both commented on another mutual friend's post. She hit me up & asked why we were no longer Facebook friends. I told her that I thought she was the one who cut me off. We chalked it up to sensitive touchscreens on our phones and laughed.