Why does Mr. Rochester not confront Jane about helping him?-Emily Harms

When Jane helps Mr. Rochester when he falls off his horse, why doesn't he tell her who he is?  He even brings himself up in conversation with her knowing that she works at Thornfield, but he just acts like he knows who Mr. Rochester is.  When he calls her in with Adele, he still doesn't bring it up and only criticizes Jane and her paintings.