Bus stops are small reproductions of our lives. You stand or sit there waiting for a ride that can bring you to your final destination. During this wait you share a limited space with unknown people. Sometimes you talk to others, sometimes you just ignore them because you are busy thinking or because you just want to scroll through your phone with no particular reason.
We have two friends that we've always known as a couple. They first met at a bus stop 15 years ago. They are now married with children. Life is often unpredictable.