Sentence 1: Bob had just moved and had to go to a new school. 
 Sentence 3: His mom encouraged him to make a new friend 
 Sentence 4:  At lunch Bob asked to sit with a classmate named Rob 
 Sentence 5:  Bob and Rob became instant friends 
 Option 1: He was nervous because he had no friends there. 
 Option 2: But Bob was an army brat and should be used to it but he was shy and didn't make any friends for a long time.