On a strictly physical level, you've got it easy because you are a girl. He's got his work cut out for him. Enjoy that fact.

On a more emotional and relationship level, you shouldn't worry about it. He loves you, and wants to be with you. No two people have sex the same, but that doesn't mean one couple is "better" than the other. It's a unique bond that only you and him will share.

Not to mention, having sex with someone you really love is pretty much always wonderful. The two of you are so comfortable with each other and have so much to express, the sex pretty much always rocks.