Im a 14 year old girl, and im really nervous about my first date?

You've been friends for awhile, so obviously you've attracted him by being yourself. Instead of thinking of it as a date, think of it has just the two of you hanging out. Wear what you would normally wear to the movies if you were going with your girl friends. There's no reason to dress up too much. Just be yourself. When you're eating, talk about things you would normally talk about with him. That's what dating is all about. Be yourself and try not to be too nervous. If you say something silly or do something silly, laugh about it. That's all you can do. Odds are that he is just as nervous as you are. Good luck!