I need to know the title to a black and white movie. It's about a guy and girl who become roomates but work opposite shifts (night/day), so they don't know each other. They eventually meet each other outside of the apartment and fall in love, still not knowing that they're roomates. Can anybody help?

I wish I knew I'd love to watch that movie it sounds good

Rafter Romance (http://www.imdb.com/title/tt0024484/) or it's remake, Living on Love (http://www.imdb.com/title/tt0029158/)