help me!

hey y’all. i need some help. all of my friends are sexually active and talk about different people they have sex with or even their intimate lives with their bf/gf and i’ve never had sex before. every time i have done stuff with a guy, they’ve never been able to please me, but i do just fine when i’m with myself. i’m talking to this girl and we are doing great in our relationship, but i am just scared when it comes to having sex bc i feel like i would just let her down. does anyone have any tips on how to relax and get let that fear go? please help a girl out. 🙏🏼 ps. i am also a very strong advocate of consensual sex, so that is not an issue!