Key Largo
(1948)

Frank McCloud (Bogart) once and for all proves he isn't a coward by killing Johnny Rocco (Edward G Robinson) and his gang of murdering mobsters. Frank is shot but radios that he is alive and coming back.
The ending doesn't say if he stays with Nora or not.
Thanks, Meggars!

Joseph C adds...:
In the final scene of the movie, Nora (Lauren Bacall) answers the phone, has a brief conversation, hangs up and says ""It's Frank! He's alright and he's coming back to us." I think it is pretty clear that Frank and Nora stay together.