Stefan: Promise me something.
Lisa: Anything.
Stefan: And I don't even know where you live. Promise me you won't vanish.
Lisa: I won't be the one who vanishes.
Lisa: Anything.
Stefan: And I don't even know where you live. Promise me you won't vanish.
Lisa: I won't be the one who vanishes.
Stefan : Promise me something.
Lisa : Anything.
Stefan : And I don't even know where you live. Promise me you won't vanish.
Lisa : I won't be the one who vanishes.
http://www.moviequotedb.com/movies/letter-from-an-unknown-woman-1948/quote_50220.html