There are lots of ways to have sex, and some of those can result in HIV transmission.
Sexually, HIV can be transmitted from cum, pre-cum, blood, anal fluid and vaginal fluid. The higher somebody’s viral load, the more likely the virus will be transmitted through these fluids. If either guy has another STI at the time, it can also make HIV transmission more likely.
Anal sex has the highest chance of HIV transmission, particularly for an HIV-negative guy getting fucked. This is because HIV in fluids, like cum, can more efficiently cross the very thin lining of the ass and establish infection.
Sharing sex toys, or needles during needle play, and front hole (vaginal) sex all have high chances of HIV transmission as well.
Generally, sucking cock has a low likelihood of HIV transmission.
Often, HIV transmission between men happens when one partner is HIV-negative, and the other guy is HIV-positive and doesn’t know it. Guys with undiagnosed HIV can have especially high viral loads, increasing the possibility of transmission. Even if you’ve talked about HIV status, it can be tricky — tests won’t detect HIV within the first few weeks of infection, which is when viral load is highest. If you’re choosing your sex partners based on HIV status, or having sex without condoms, it’s important to get tested regularly so that if you do become HIV-positive, you can find out quickly and get connected to care right away.
Whether you’re HIV-positive or HIV-negative, knowing how HIV can be transmitted through sex can help you sort out what kind of sex you want and how to stay healthy. There are plenty of things you and your fuck buddy or partner can get into without having any chance of HIV transmission, and also lots of strategies to stay healthy while fucking or sucking.
Depending on the sex you’re having, or want to have, it’s important to consider that there’s a possibility of HIV transmission. But there’s good news! There are strategies that seriously lower these chances, such as condoms, PrEP, PEP and undetectable viral loads. Figuring out what combination of strategies works for you is the best way to prevent HIV transmission.