Not Wanted (1949)

Twentyish Sally Kelton is unhappy at home and in her drab hometown until she meets roving musician Steve Ryan. Sally falls for Steve to whom she's just another fling before he heads to another town. When he leaves, she gets on a bus and follows him to his next stop. On the road she meets Drew Baxter, owner of a gaseteria in the town that's her destination. Drew sets Sally up with a room at a local boardinghouse and a job at his business. Try as he might, Drew can't win Sally's heart from Steve, who has remained indifferent to her since her arrival. When Steve heads off to South America, Sally is even more despondent after she learns that she's pregnant by him.