Who is Dean Robillard from Match Me If You Can and what is their importance?

Dean is God's gift to women. He is the quarterback who is being groomed to step in when Kevin Tucker retires from the Stars as quarterback. He meets Annabelle and they play together. They are like brother and sister but Annabelle tries to use Dean to make Heath believe that she isn't in love with Heath. Dean is the other man in the book.