Law of the Tropics.

Jim Conway, who works on a South American rubber plantation, leaves to meet a girl from the United States whom he is to marry. But he receives a telegram from her telling him she has married someone else. He goes to a waterfront café where he meets a singer, Joan Madison, and tells her his troubles. He asks her to marry him and return to the plantation with him using the name of the girl he was to marry. This strikes her as a great idea as she is a wanted fugitive.