Having friends that are sexually active and prior sexual activity and dating older people
When well-meant compliment from a buddy about how foxy Stacy looks sets Bobby off. He isolates Stacy from her friends; time spent talking or doing things with others is time taken from him, he explains.
It would be true for most hiv if the person lacks ccr5 on the cells surface. but people with two copies of the ccr5-delta32 gene are basically immune to hiv infection.