Looking for a noirish romantic night time film

Movies that feature romance in a noirish night time fashion. Think Batman and Catwoman. Must be made in the 50s or 60s. I love that old timey feel. +bonus points if it features architecture and takes place during just one night.

So not After Hours, but something like Double Indemnity with less crime aspect and more romance. Key themes of yearning with that old timey night time noirish feel if that makes sense