Want to make sure I understand the ending of this one. The kid read all the letters and from that he knew all the things about Anna and Sean. So, did he just believe he was Sean from reading the letters and being somewhat nutty, or was he really Sean and was trying to let Anna down easy because he knew he had cheated on her. What was with the scene at the end where she is so distraught at the beach? Was she just overwhelmed with everything that had just happened from the kid bringing all her raw feelings for Sean back up front?

I hate when movies try to make me figure out what happened at the end. Eyes Wide Shut absolutely sucked that way because of the ending.