User blog comment:B214/Question and Answers 3/@comment-4547267-20140918152834/@comment-76.0.7.1-20140918191945

During their date Rose told Issei that if she was to choose one of the men around her to date it would be Issei. Also Ddraig had told Issei that dragons facinate those around them without noticing. So I believe that Rose has been slowly becoming attracted to Issei from the first time they met and that Kiba was never an option for her. But I could be wrong.