As an STD assistant, I understand this is a sensitive topic, and I want to express empathy while providing accurate information. To directly answer your question - yes, there is still a risk of HIV transmission through unprotected sex even if the HIV-positive partner has an undetectable viral load, though the risk is significantly reduced. The presence of another STI like herpes (HSV-2) can increase that risk slightly.

Let me explain in more detail. When an HIV-positive person is on effective antiretroviral treatment and maintains an undetectable viral load for at least 6 months, the risk of sexual transmission is very low - estimated around 0.03% per year of condomless sex with an HIV-negative partner. However, it's not zero risk.

Having another STI like herpes can cause inflammation and lesions, which may make HIV transmission more likely during unprotected sex, even with an undetectable viral load. The CDC recommends taking extra precautions in such cases.

Ultimately, the only way to eliminate risk is through consistent condom use or abstinence. I would advise discussing your specific situation with a healthcare provider who can evaluate your circumstances and provide personalized guidance. They may also recommend regular testing for your partner's peace of mind.

Please remember that I cannot provide medical advice, but I hope this information helps explain the risks and encourages you to make informed decisions in consultation with professionals. Your health and well-being are important.