Guys have a lot to worry about when it comes to sex and the more nervous we feel the harder it is to get and stay erect. It’s a problem for a lot of males so no one should feel embarrassed it’s very normal. Ideally you should not feel pressure to have to get hard, the more relaxed and in the moment you are the easier it will be. Plus if you really focus on pleasing your partner with your fingers and mouth the less you’ll be thinking about your own cock and the better you’ll be at being present. Also if you’re not having a one night stand there is always the next time and the more comfortable you feel with your partner the less you’ll have to worry about over all. Stay relaxed keep your mind on your lady and good luck.