Sentence 1: Colin was single because he got caught cheating on two women. 
 Sentence 3: She was very naive and sweet, and he didn't want to ruin it 
 Sentence 4:  So, he erased his Facebook, Twitter and got a new phone 
 Sentence 5:  He convinced his new girl that he was a good guy with no past 
 Given Sentence 2: He decided to put on a scary mask.