As you have been advised on previous threads what the risks are for HIV and were told unprotected vaginal or anal sex or sharing IV drug needles as the only risks, and are now told that oral sex is not a risk as well, we are closing this discussion as your question has been fully answered.
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Oral sex either way, does not carry any risk of HIV, however it is not true for Herpes and suggest you to post this concern at the relevant forum