Thank you for your question. Sex with an uninfected person. These are totally safe sexual activities, where there would be no risk of infection with HIV, nor other STD's.
Safer sex involves sexual activities that do pose a risk, but it's a very small risk.
Receiving oral sex. Sexual activities where a condom is used consistently and correctly. Sexual activities involving exposure to saliva, sweat, and urine. However keep in mind that activities that may be low risk for HIV, may be high risk for other STD's. Giving oral sex, especially if semen, vaginal secretions or menstrual blood gets into the mouth.