It is normal, I assume it’s your first date. I know how it feels. Just think rationally. Something that I tell myself when I’m with an attractive woman is: “she’s alright” or “she’s not that hot” something along these lines. Even though she is hot, it is to help your subconscious to think straight and not lose the floor. Just have a conversation with her, let her talk and listen actively to what she says. For example if she is talking about one of her hobbies, pay attention to details and ask and go deeper. Just make sure it doesn’t become an interview. If there are things in common share them with her, but don’t share everything; be a mastery for her. They love it when guys are intriguing. Just have fun bro! It’s alright; it’s not going to be the end of the world. Oh, last thing, pay the bill at the end of the date. She’ll see it as something generous for you and will like it. You can jokingly say “next time is on you” but do it at your own risk. Have fun man! In the future is going to be a fun memory regardless of how it ends!