I'm a guy who decided to try something I was curious about for some time. I found a guy on grindr who lived close to me. We decided to meet up. We jerked each other off and then sucked each other off. I put a condom on for the last part but we didn't do anything as I wasn't able to get in. After this strange thoughts started to fill my head. Before we met up he said he was HIV negative and even asked me if I've had sex before. When I told him that I haven't, he said that then we can suck each other off as now he knows that I have no STD's. After the act, I asked him if he was sure that he didn't have HIV and he said that he was sure as he had been tested after breaking up with his girlfriend. One thing only bothers me - he told me that he hasn't done anything with guys before but he seemed pretty skilled to me. I told him that and he said that it's because he had done a lot of stuff with girls. He never came in my mouth, the otlnly thing that got in was precum. How worried should I be? He seemed credible as he studies in the same university.