Anyone diagnosed with genital herpes must disclose their disease with all potential partners. Even the use of a condom does not prevent the spread of disease because a condom may cover not all sores. It is possible for the virus to become active and transmitted to a sexual partner even when the skin appears completely normal.
How to protect your partner:
1: always use a latex condom.
2: no sex while you have an outbreak or if you think you are about to have an outbreak. Wait until sores are completely healed before resuming sexual adtivity.
3: use Valtrex daily to minimize the risk of spread.