Living on Love (1937) James Dunn, Whitney Bourne, Joan Woodbury

Daytime saleslady Mary Wilson (Whitney Bourne) and nighttime trucking manager Gary Martin (James Dunn) share the same singleroom apartment. Though they never cross paths at home, they become increasingly antagonistic, leaving nasty notes and playing practical jokes. Separately, the pair meet by chance and fall in love, unaware of their domestic link. Complicating matters are the people they re already involved with, a supervisor (Franklin Pangborn) and an heiress (Joan Woodbury).