When you have an STD, you deal with it on two levels. Physically, you’ve got to learn how to cope with the symptoms and manage outbreaks. Emotionally, for most people, it’s a deeply shameful experience. That shame may come into play when you begin to get intimate with a new partner, and it may prevent you from telling him about your STD before you have sex. Not telling, though, can lead to problems. He may feel betrayed and, if the relationship progresses, wonder if he can ever fully trust you. Telling him beforehand gives him the opportunity to make an intelligent decision, and will strengthen the future of the relationship.
Read the full article here: When to Tell Him You Have an STD