No, it is not illegal to not tell someone you have herpes. However, if you are in an intimate relationship with someone, it is best to let your partner know that you have an STD. This will allow you both to take precautions to minimize the spread of the STD.

Do you have to tell casual partners about herpes?

Dont tell your partner you have herpes when the two of you are in bed together about to have sex, and definitely dont be irresponsible by telling them about your herpes status after youve already had sex. Instead, choose a natural moment in conversation to quickly, clearly and casually explain your situation.