So, I recently met this girl who definitely wants to sleep with me. I'm a virgin. She has had two sexual partners, the first one being just this last May. She says the first one got tested for everything beforehand because he had just got out of a relationship that ended with cheating. So, as far as she knows, he was disease free when they did it. The second guy, she said she's willing to pay for him to take tests, and that if he's clear, then that means she's clear. She prefers to not take a test herself because of the invasive nature of them. Let's assume that she's telling the truth about the first guy. If the second guy is tested and comes out clean, does that make it safe for me? Or should I not do it unless she actually takes the tests herself?