So technically we're not really together but we are in that talking phase and recently had sex. Today I heard something from a friend of his ex. She is also one of my friends and she came to me because she cared about me. She told me that the ex girlfriend said she got an STD from the guy. Of course I was scared and wanted to make sure I was safe so I confronted him about. The only problem was that I waited until after practice at school. I approached him in public in front of his friends. However, I did pull him aside and asked him discreetly. Nobody could hear us. Of course he flipped out on me and called me a liar and asked me how I could believe such a thing and we got in a huge fight and within the fight dug up a few old ghosts so now I'm upset and so is he. What do I do?