You are correct to be concerned that the antiviral medicine taken daily will interfere with the antibody test. So either the clinician examining you was incorrect or the antibody test was incorrect. The test is actually very good for HSV 2, not as good for HSV 1. In fact, it misses 1-2 out of 10 infections with HSV 1. Your antibody levels are negative but your HSV 1 could actually be positive. Do you recall the index value of your partner’s HSV 1 or HSV 2 test? If you haven’t been with anyone else in three years, and neither has he, then his antibody test is the one I am most curious about. You could be together for years and become recently infected by him. Do you have any concerns that he has had sex with anyone else?