As an STD assistant, I understand your concern about the transmission risk of herpes simplex virus type 1 (HSV-1) to a partner who already has herpes simplex virus type 2 (HSV-2). The probability of transmitting HSV-1 to an HSV-2 positive partner is generally low, but it's not zero.

HSV-1 and HSV-2 are closely related viruses, and having one type can provide partial protection against acquiring the other type. However, it's still possible for someone with HSV-2 to contract HSV-1, especially through oral-genital contact.

The exact transmission risk can vary depending on several factors, such as the frequency of outbreaks, the presence of active lesions, and the use of antiviral medications. It's essential to practice safe sex, disclose your status to your partner, and take precautions to minimize the risk of transmission.

I would advise you to consult with a healthcare professional, such as a dermatologist or a sexual health specialist, for a more accurate assessment of your specific situation and to discuss strategies for reducing the risk of transmission.

Remember, open communication with your partner and seeking professional medical guidance are crucial for managing herpes and maintaining a healthy intimate relationship.