Do not acuse your girlfriend of cheating if you don't know for sure. It is possible to get cold sores as a kid.I used to have them all the time when I was little.What proably happened is someone else like an adult like her parents or someone could have had a cold sore and kissed her and then she got it when she was little.Or maybe when she was younger she shared a drink with another kid who had a cold sore and she could of gotten it that way.Sometimes cold sores just show up out of the blue but that doesnt mean she is cheating on you.Cold sores are contagious you can get it from kissing someone who has a cold sore or by simply sharing a drink with someone with a cold sore.

It can stay in your system for a long time with no symptoms. Do not to strait up accuse her but talk sensibly about it.

95% of the North American popuation has been exposed to the HSV-1, ie cold sores. That means you most likely also have the same virus in your system. In most people the virus never becomes active, which is why you have never had a cold sore. She is just one of the many that has outbreaks, it doesn't mean anything.

Hi there,

I dont think that u should accuse ur girlfren of cheating straight away - get her checked out first. u dont want to break up a perfectly good relationship..

season_00

I agree... do you know how common it is to have cold sore- or a canker sore? (eating too much cirtris or acid foods) You body does change as you become older... and some people never having cold sores... suddenly get them when they preceed to age-- same with allergies.. etc.

Look up cold sores online or call a doctor's office, and ask to speak to a nurse and ask away-- if you are not certain.

Is that the only reason you think she is cheating...? My verdict: cold sores=not cheating.