he turned and started walking toward his door , and i kept waiting for him to look back over his shoulder and say something nice , or give me some sorta sign that he really wanted to see me again and be my friend , but he did n't look back or anything , which made me feel sorta mad at first , but then that madness turned into a sadness that stuck with me for many days , until i got this crazy idea : i would send private jackson a hopeful haiku every day , and every one of the haikus would be about dogs , because that was the only thing i knew he liked .