Mielr said:

That's interesting. In the interviews I've seen w/ Kirshner, he says that the line was changed to take advantage of Han's character more than the line that was originally intended. I took that to mean that they wanted to take advantage of the self-centered aspect of Han's personality, and honestly the line never struck me as anything other than humorous.

Maybe it's more of a regional/cultural interpretation. :-?

Nothing personal, but why are there so many people misspelling Kershner's name.

Well Kershner used to give half-truths in his interviews and was taking credit for things that he shouldn't (listening to him it was always "I this", "I that"... a decent person say "we" when talking about collaborative wrok). He actually didn't have anything to do with the change, other than agreeing to what was proposed by Ford. According to The Making of book, Ford came up to him before shooting of the scene and suggested the change because he felt that was what Han would say. I guess Ford was primarily concerned with the character that was established in Star Wars and "I love you too" was not really a match with it.