First Kiss Help?

So I just had my first kiss on Saturday night. It did not go well. I've always thought that it would be this amazing thing and I would remember it forever, now I just want to forget all about it. He kissed me and I just laid there. I didn't do anything back. I just froze up and laid there. I feel horrible about it, cause he was putting in so much effort and I didn't do anything back. Any tips/advice?