title: How Do I Create a Relationship Between Two Users in Flask SQL alchemy
body: <p>Please am working on a Chat application using flask.. But I'm having a little issue . I want to be able to create a relationship between two users in my flak SQLite..</p>
  <p>And I want the messages of only those two users to show when ever I click their link..</p>
  <p>For example, if a current user wants to chat up another user on that website, how will their relationship work.. Please someone should explain to me</p>