bananamilk saidIs it theoretically possible for two hiv- parties to have bb sex long term without contracting hiv?
Yes. HIV is a virus that does not arise spontaneously out of nothing. It must be passed from an infected person through bodily fluids, such as semen. If 2 parties do not already have HIV, and only have sex with each other, then neither can contract HIV, regardless of the kind of sex they're having together.
The time period for the most common HIV testing methods is 3 to 6 months, from initial infection with HIV until the tests can detect it. That's because these tests don't test for the virus itself, but indirectly, for antigens in the blood that the body produces over time to the presence of HIV. And that time can be between 3 to 6 months, the "blackout window" when a person can have HIV, but test negative, and still be capable of infecting another person.
Therefore, one should not bareback until tested over at least a 6-month period with negative results. It's recommended you both test once, then test again at 6 months, preferably having no sex together at all or with anyone else during that period. But remember this:
You place your life in the hands of another man when you BB, trusting that he won't ever cheat on you and become infected. For that reason you & he should continue to test for HIV regularly, ideally every 6 months. The oral swab method is easiest, gives results under 30 minutes while you wait, and is free or low cost through many different services. A home test version should be selling in US stores beginning in October.
But again, it will only be reporting your HIV status from 3 to 6 months earlier - it never gives your status as of today. If your BF cheated 2 months ago and got infected, he will test negative today, but also be infectious today, and can infect you, too.
A cheating BF is one of the leading causes of gay men contracting HIV. And barebacking is how they pass it onto their unsuspecting BFs. You're trusting this guy with your life, especially if you're the bottom, so think well before you have unsafe sex.