It all depends on the status of the person. How can you confirm that person is not having
HIV or STIs? Screening is important. And you can not know the status, best is to take precautions. One is condom for sure. Then there is something called preexposure prophylaxis which protects against HIV.
You need to connect to experts.
I am infectious disease physician and HIV Specialist (Certified from American academy of HIV Medicine)
Next Steps
Connect for right advice.