Geez, still this issue, 25 yrs later (YES prep and undetectable date back to the late 90's, not 2005). HIV is done deal, move on.
If u wanna be scared to bare then be scared of gonorrhea syphilis clamydia. So if STDs is your fear then a) don't escort or b) don't rim, don't suck, don't kiss, don't fuck (like 50% of rentmeners)
Diseases: get them, get treated, get over them