I cannot
believe that there are people out there who would look down on someone for having a cold sore! The mind just boggles!! Yes, cold sores are caused by the Herpes I virus. Most people have it - if you've ever had a cold sore, you have it. BIG DEAL. Genital herpes is caused by Herpes II. Chicken pox, for crying out loud, is caused by another form of the same virus - are we now going to accuse small CHILDREN of having STDs? I'm just shocked at the mentality of some people.
My family loves to kiss each other - forcing small children to kiss older relatives, etc. I never do that - I say, "How about a quick hug instead?" But I get cold sores a lot (and trust me, without saying anything, er, TMI, it is not possible for me to have the sexually transmitted virus) - usually when I've fought off a cold. I don't actually GET the cold, I get a cold sore instead. I think that while your body is distracted fighting the cold virus, the Herpes I (cold sore) virus goes, "Aha! A gap!" and has a little party on your lip.

But if someone DARED to tell me I had an STD I would lay them out flat. And maybe sue them for slander.