Statistically 1 in 5 people has genital herpes. but 90% are unaware they have it. I know that this isn't what you want to hear and its just my opinion. I think if you want you should keep seeing her but keep it friendly and just explain you appreciate her being so honest and would not want to contract it unless your relationship was serious (marriage). I think the chances are against it working out because she's an older woman. I don't think you said how much older but I just don't think it works out with older women that often (goes to marriage) unless its a negligible difference (1-5 years). The society we live in today is blasted with images of women with huge breasts and men with six packs. In addition, we are soft. We have no great depression or world war to make us work for the greater good and we are no longer idealists who will stay married no matter how much blood is to be shed or what the opportunity cost. So you want my answer if its 1-5 years older I see where this is going but keep it friendly. If its more than that I distance myself as best I can without hurting her.