Pamela:
Once you have herpes in a given area, antibodies in your bloodstream make it hard for the virus to "set up shop" elsewhere, even though it recurs in its usual place. (Otherwise, washing would make us all covered with herpes . . .) I would wait a few days till the lesion dries up, though, before direct kissing, orally or genitally. Now and then some people do get herpes in more than one place.
Best.
Dr. R