It was a black and white movie I saw late one night about 30 years ago. About a small town boy who moves to big city. Meets big city lady who takes him under her wing and shows him the ropes and he starts to make good. Then meets small town girl who has just move to city and falls in love and big city lady has to step aside with broken heart that he is not even aware of. I thought the movies title was Never Love a Stranger but the only movie I can find with that title is the wrong one.