Scenarios of friendship and
sexual activity among gay men

  Sexual fling or relationship begins.  
Choose one: Sex continues but no friendship develops: become "fuck buddies."
Sex continues: develop a casual, close, or best friendship.
Sex ends: develop a casual, close, or best friendship.
Sex ends: friendship never develops or is ruined.

Adapted from Gay Men's Friendships: Invincible Communities by Peter M. Nardi, published by the University of Chicago Press. Read more about the book.