As an STD assistant, I understand your curiosity about how some individuals with HSV-2 (genital herpes) may not transmit the virus to their long-term partners. While transmission is possible through intimate contact, several factors can influence the likelihood of transmission, such as viral load, frequency of outbreaks, and the use of suppressive antiviral medication. However, it's essential to note that the risk of transmission is always present, even in long-term relationships. If you have specific concerns or questions, I recommend consulting a healthcare professional who can provide personalized guidance based on your individual circumstances. Remember, open communication, regular testing, and practicing safer sex practices can help minimize the risk of transmission in any relationship.