Sentence 1: John had gotten a new job. 
 Sentence 3: One day, he worked up the courage to ask a coworker to lunch 
 Sentence 4:  His coworker agreed 
 Sentence 5:  John and his coworker soon became friends 
 Option 1: He was a shy person and didn't know how to approach his coworkers. 
 Option 2: He was an outgoing person and quickly made friends with everyone.