I believe it's 70-80% of adults have hsv-1 (herpes simples virus 1) which is the cause for cold sores.
Hsv-1 with a break out or not can still be transferred orally. That means if your partner kisses you or performs oral sex on you. There are a lot of cases of hsv-1 genital outbreaks due to the alarming cases of hsv-1 in recent years.
Hsv-1 can turn into hsv-2 (genital herpes) which is usually around the genitals. Hands and sometimes eyes. Hsv-2 is rare compared to hsv-1 but the contraction rate in increasing.
Many people don't have signs or symptoms but have the virus (hsv-1) . In order to test for it you need to perform a blood draw. Many clinics don't perform blood draws because it's difficult to different viruses and antibodies in blood as well as expensive. It's best to get a swap of the outbreak if you have any.
Even if you wore condoms 100% of the time the chances of you catching hsv-1 is relatively high almost 8/10. And seeing from the other thread a majority of people here have more than 15-20 partners. Chances are you have it, at least a betting man would make that wager that you do.
I've never had a cold sore or an outbreak but chances are I have the virus due to my past partners. I will get tested for both soon.
This is for the brothers and sisters who seriously lack knowledge of the std and who wanted to read a legitimate response.