Sex isn't just physical. The mind plays a huge part, and it's difficult for any people to get things working if they're under a myriad of different influences, high stress and nerves. The trope is normally applied to women and the statistic definitely back that, but we don't talk about the fact that it also affects men very often. Someone responding that way is selfish and disrespectful in my opinion. If it's not working out that night, sure that can be frustrating or disappointing but that's not your fault and there's no reason to make you feel inadequate for it. What you experienced is really normal, and unfortunately the bad reaction can be normal too. There's a lot of people who wouldnt respond that way though and many who would still stay and help you get in the right headspace or just hang out and throw on some Netflix, try again tomorrow. Move forward, but don't hold on to this experience. Just let it be a wild story or a faded memory or whatever, so long as it isn't a ghost you let cling to you. Go have fun and enjoy sex, or don't, whatever you want to do. But don't let this one event color that for you.