The boy manages to slowly convince her of this by telling her excrutiatingly intimate details of the life she shared with her husband Sean, including details of their sexual history. In the end, it is revealed that the boy discovered a box of letters buried by her husband's mistress. These letters are the source of all of his "inside information". The letters were written by Anna to her husband, which he had given unopened to his mistress to prove his love for her. His mistress held on to the letters until she decided she would ruin Anna's wedding plans by showing her the letters and stating her husband's intent to leave her before his death. The young Sean had discovered the letters and believed himself to be her husband because of his love for her. After he discovers the infidelity, he comes to the realization that he can not be her husband because he feels he would never have been unfaithful to someone he loves so much.