I was infected with herpes when I was 16 by my first sexual partner (he denies knowing that he was infected, we were together 18 months), I know, how lucky am I!? Anyway, I am now 24 and apart from the first couple of outbreaks when I was 16-17 I have hardly noticed any symptoms since...until today when I found 1 blister. I'm now mortified because 3 days ago I had sex (unprotected, I know, stupid, stupid, stupid) with a guy I've been seeing for a while and I am completely terrified that I may have passed it on to him. I was with my previous partner for 3 years and was honest with him about the condition and wanted us to always use protection. He refused, but as far as I am aware he never contracted the infection. If I did have an outbreak when I was with him, it would have been so mild that I didn't notice. Is there a time period where you can tell if you have infected someone or not? There is so much contradictory advice online that I just have no clue what is fact and what is fiction regarding the situation.