Alceste
Vagabond
If I have sex with someone that has nio problem having isex with me without a condom eventhough iwe just met, I have no reason to believe I am the first person with whom she does that.
If I have sex with a friend that I know have had sex with theee other people, the risks of her being a carrier are just lower. Thats it.
No, they aren't. It's still possible that your random hook-up has had unprotected sex with fewer people than your friend.