That's exciting that you are going on a date with him though!
He wouldn't have asked you if there wasn't some part of him (not you) that wanted to ask you.

Don't ever change yourself for someone else. If some guy doesn't love you for you, then he is not worth having around anyway. I have a hard time with that one too, so don't worry, you're not alone.

I hope that you guys have a great time on your date!