/Film has an exclusive look at Lawrence Kasdan’s original handwritten first draft of The Empire Strikes Back plus a page from the first printed draft.
We have also been given Lawrence’s original handwritten page for the Leia / Han “I love you” scene, which of course features different dialogue (Harrison Ford famously came up with the classic “I know” on set while they were shooting the scene.)
“I know” may be a classic, but “Just remember that cause I’ll be back” might have worked, too. After all, this was before Schwarzenegger, so the whole “I’ll be back” thing wasn’t coined, yet. Add a Han Solo smirk, and it wouldn’t have been horrible. :-)