I have never relied on someone to disclose their HIV status to me unsolicited, even if they were pos. I always ask what someone's status is if I am going to sleep with them AND when their last test was, that is important to ask too. Maybe they got tested negative 10 years ago, contracted HIV since then, but don't know it.
If you are sexually active, get an HIV test every 6 months and always talk about status don't expect the other person to tell you if you don't ask.
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