I'm talking about HSV1 here, but it could apply to both viruses. Now I know herpes is extremely contagious, but is it contagious if both parties already have the virus? Like my boyfriend and I both have HSV1, if we kiss and the next day I get a cold sore, is he at risk for getting one as well? Or is that because he already has the virus, his outbreaks are determined by his own body? Or if I use accidentally use a chap stick I once used on a past cold sore, will that cause me an outbreak? I guess I've always believed herpes outbreaks can be caused these ways, but some things I've read on here make me question that. That and now that I think about it, when ever you read about what causes an outbreak you never see "coming into contact with something that is contaminated". I hope this question made sense.