Close friends are to be treasured, to be appreciated, to be personally connected to.
One definition of 'close friendship' is - "Close friendships are a step above casual acquaintances. You have bonded over shared interests, goals, or struggles, and put effort into making time for one another. You seek advice from your close friends, celebrate successes with them, and kick back and relax with them. These are probably the friends you spend the most time with." I have known these two for over 60 years and they are special!