In the original superman films...

[schnapps]

I thought that Lois Lane eventually found out that clark kent is superman? I've seen superman returns and lois doesn't know about clark/superman being the same person. How come? What have I forgotten from the original films?

I think superman returns is great btw, the best film I've seem for ages!

Think that Clark gives Lois an extra special kiss that makes her forget he's Superman.

Thanks chestnutty, that explains it!