I Just Can't Escape

Have you ever met a person that you tell everything to? All your secrets and dark thoughts. Have you ever met person who always makes you feel safe no matter what? Have you ever met a person has always been there for you through the thick and thin, who believed in you when you forgot how to believe. Have you ever met a person that promised to never leave you? What do you call them? Your friend.
Now imagine if that friend leaves.... What would you do then?