Kirsten i seriously doubt you could pass it on, but to be on the safe side, just don't kiss them right now, better safe than sorry or ask a doctor,it is highly contagious to other humans and once you have the virus you have it for life,it is the most common of viruses and if you have not got it you are darn lucky,i think it can be passed on in the early stages too when one does not really know they have it, that is why so many people end up with the virus, because you would not purposely kiss someone with it or let someone with it kiss you.