They can go to a free helpline that a state or local organization offers, like a stop addiction program. This is usually free and safe, because they are usually gov. certified.
If this helps please rate, thank, and give brainliest answer!
I know one is to get tested. Another could be to use protection that could prevent that kind of stuff. Then if you're already infected, you should tell your partner. And if you do sleep with your partner while infected, tell them to get tested.