Finn, you can get herpes from an infected person very easily.
It doesn't matter if you're wearing protection or not, and it doesn't matter if they're having a visible outbreak or not. I'm not joking. They are shedding herpes virus constantly, from many areas of their body.
Now you know why so many single people have herpes. Many of them lie about it (because they don't care, or because they're desperate to have a date), but the problem really is as serious as Denis says it is.
It's the gift that keeps on giving...
_