How have I not contracted herpes yet

How have I not contracted herpes yet if my boyfriend tested positive for both hsv1 and hsv2 about a year ago. We are in a long-term relationship in our 30s and I am pretty sure I’m going to be with him for the rest of my life and that’s a risk I took but I have gone to get tested two times just to be sure and both times I have been negative and we don’t use any protection whatsoever how is that possible That I haven’t gotten it yet