Hollywood actor Jonah Hill has been dating actress Isabelle McNally for several months, UsMagazine.com reported. The two were first photographed together walking their dogs in September. "It's been going on longer than that, [a] few more months," an insider told the magazine about the courtship Thursday. Hill can now be seen in the critically acclaimed film "The Wolf of Wall Street." McNally's credits include "Indigo Children" and "Frances Ha."