I am a regularly tested and (probably) HIV-negative gay man. And I am sick and tired of reading all that 'clean UB2' bullshit. I've been living in a serodiscordant relationship (so my partner has HIV) for 10 years. It's absoluetly possible to have sex with someone living with HIV, without transmission occuring and without fear! Get yourself educated about how HIV is passed on, how it is not and how you can protect yourself – there are so many options these days.