I told you before, STDs are called STDs because they are contracted by sex. You can get a cold or flu from sharing a drink, but not chlamidia or genital herpes or gonorrhea. And definitely not HIV. The HIV virus requires bodily fluids to enter through some kind of abrasion, or tear. That's why gay men are more likely to get it. Women can get it from having sex with infected men, but it's less likely because the walls of the vagina are stronger and less likely to become torn during sex, so the skin barrier keeps the virus out. It's really not that easy to contract. If it were, we'd all have it.