Sentence 1: Tom and Liz had been dating for 5 months. 
 Sentence 3: He decided to surprise her with a vacation 
 Sentence 4:  While on vacation he was going to propose 
 Sentence 5:  At dinner, he popped the question and Liz said no 
 Option 1: Tom absolutely adored Liz. 
 Option 2: But Tom didn't know that Liz was cheating on him.