Welcome back to the forum. However, there is a limit to the number of questions permitted; see below.
Let's start with the details of your positive HSV-2 blood test. Many apparent positives are false (just scan the STD forum or the herpes professional forums for lots of discussion about it). Let me know the exact test(s) done for HSV-2 and HSV-1, and the numerical values. Your doctor's office or clinic should be able to provide this information. For now, however, I will assume your HSV-2 test result is valid.
2) This question first, because it overrules the others. Your negative HIV test at 8 weeks proves you weren't infected. HIV testing overrules exposure history, symptoms, and all other factors. (See http://www.medhelp.org/posts/show/1704700
1,3) HSV-2 increases the risk of HIV if exposed, but only by about double. If the chance of catching HIV was, say, 1 in a million, doubling the risk means 1 chance in 500,000. And first, you have to be exposed -- and the chance your partner had HIV undoubtely is very low. In any case, your HIV test shows you didn't catch it.
MedHelp rules stipulate a maximum of 2 questions every 6 months on each of the professionally moderated forums (see Terms and Conditions). Please be aware so you don't risk a nonrefundable posting fee on a question that would be deleted without reply, before next September. But I will still be happy to comment on your HSV-2 test result if you wan't to provide that information in this thead.
In the meantime, no worries about HIV from your recent exposure.
Regards-- HHH, MD