Your question doesn't make any sense. Did you have a risk for which you require assessment? Because that's why this forum exists. If you did not have a risk, we can't help you with made up scenarios.
One more time:
Risks for HIV are:
1) having unprotected, penetrative anal or vaginal sex, or
2) sharing intravenous needles.
If you did not have one of those two risks, then your other questions are not relevant. If you had unprotected anal or vaginal sex, you should not rely on some story about "friction" to keep you safe. Use condoms.
Stop reading too much from these somewheres and anywheres. It only affects your sanity.