Always tell someone where you are going and tell them about the person you are arranging to meet. If you have a mobile phone, arrange for someone to ring you during the time you are out to make sure you are okay. If you keep a private diary, write where you are going and who with. Remember, you are meeting to have fun or for enjoyment. Don't let the situation get out of hand.
Common sense is the most essential aspect of personal safety.
8 did, and about half of those didn't use a condom for at least one fuck. If you can't be sure, you're taking a risk. That said, HIV isn't passed on every time men fuck without condoms.