I liked the lines Lois wrote on the mirror. They felt fairly like things she would say. And her choice of words for proving who she was (Clark's crack as Superman about being lead-lined) was not only a good quote to refer to (as only the two of them would know it), but it also let Clark know that she KNEW. For some reason, I can see Lois preferring double meanings like that.
This chapter had a nice mix of humor, romance, and angst. I'm quite eager to see more.
Random questions: How does being a ghost affect bodily functions? I assume she doesn't need to eat and all that? But if he can touch her, what else can he do with her? And if her normal bodily functions don't work, that means there's no danger of anything, right? Lol, what a weird bunch of questions for me to ask . . .