I'm certain I remember your previous posts where you asked about something that wasn't a risk. Those posts had members, maybe even me, tell you what were risks for HIV. I'll remind you one ore time. The risks for HIV are UNPROTECTED vaginal or anal intercourse (with penetration) or sharing IV drug needles. So, someone touching their genitals to you, front or back will NOT transmit the virus. Air inactivates it. This is NOT a risk in any way. That is your reminder and I hope you internalize that so you don't have irrational fears that worry you.