HSV-2 is typically genital herpes. HSV-1 is typically oral herpes. However, both strains of herpes could spread orally and genitally. Having one strain of herpes doesn’t protect a person from catching the other strain. It’s clinically proven up to 80% of sexually active adults carry HSV-1 antibodies. Seem there is no protective barrier from kissing. Keep in mind HSV-1 and HSV-2 are completely different strains of herpes.