Sentence 1: Denise was contemplating her relationship with her boyfriend. 
 Sentence 3: In addition, he was working so much he barely had time for her 
 Sentence 4:  Denise decided it was best that she end the relationship with him 
 Sentence 5:  Denise was saddened that she broke off the relationship with him 
 Given Sentence 2: Suddenly, he started to become rather mean to her.