Good for you for getting tested, and great news for you.
I don’t think this one experience put you at significant risk, honestly. But it will be good to look closely at his test results tonight and see if herpes testing was actually done. Even if it was not, and he happens to be positive I do not think this one experience is high risk for you. You are wise not to assume there have been any other partners during this time. You really just never know.
Condoms do provide better coverage for women as the site of shedding for most men is the shaft of the penis. Yes, there could be virus at the very base of the penis but those odds are still low in one contact. I’m not all that worried about scrotums. The skin is a bit thicker and honestly, I see lesions there infrequently compared to how often I see lesions on the shaft of the penis in men.
A scar on his back or his backside? I wouldn’t expect herpes lesions on the back but we do seem them on the buttocks, for certain.
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