Re: Kissed, I had cold sore
It's hard to say. Sometimes when you're past the scab stage, it means the virus has gone dormant again but personally I'd want the entire sore to be completely healed.
Regardless, you can also pass the virus with no sore present, thru viral shedding.
I'd not repeat what you did, but I also wouldn't dwell on it. 50% of the population has oral herpes. Any time we kiss ANYONE we're risking getting it.